Animals

Mammals, birds, fish, insects, and the words biologists use to describe them.

857 words

# Animals

**Type:** Topic
**Words:** 857

## About
Mammals, birds, fish, insects, and the words biologists use to describe them.

## Words by Level

### A1
- dog - A common four-legged animal often kept as a pet or for work.
- horse - A large four-legged animal that people ride and use for pulling loads.
- fish - An animal that lives in water and breathes through gills, usually with scales and fins.
- cat - A small furry animal with whiskers and a tail, often kept as a pet.
- animal - A living creature that can move and feel, such as a dog, bird, or fish, but not a plant.
- bird - An animal with feathers and wings that lays eggs and can usually fly.
- pig - A farm animal with a fat body, short legs, and a flat nose, kept for its meat.
- egg - A rounded object laid by a bird, especially a hen, used as food.
- snake - A long, legless reptile with a thin body and a forked tongue.
- pen - A thin instrument that holds ink and is used for writing or drawing.
- tiger - A large, powerful wild cat with orange fur and black stripes, native to Asia.
- lion - A large wild cat with a tan coat, the males having a shaggy mane, native to Africa and India.
- sheep - A farm animal with a thick woolly coat, kept for its wool and meat.
- rabbit - A small furry animal with long ears and a short tail that lives in burrows.
- butterfly - A flying insect with large, often brightly coloured wings.
- fin - a fish's flat appendage
- den - a wild animal's lair

### A2
- worry - To feel anxious or uneasy about something that might happen.
- bear - A large, heavy wild animal with thick fur and strong claws.
- pet - An animal that you keep at home for company and pleasure.
- bite - To cut into or grip something with your teeth.
- creature - A living thing, especially an animal.
- elephant - A very large grey animal with a long trunk and big ears, found in Africa and Asia.
- insect - A small animal with six legs and a hard outer shell, and usually one or two pairs of wings, such as an ant, fly, or beetle.
- madly - used as an intensive, extremely
- robe - clothe formally
- meow - the characteristic crying sound made by a cat

### B1
- bee - A flying insect that collects pollen from flowers and, in some species, makes honey.
- beast - An animal, especially a large or dangerous wild one.
- wing - One of the two body parts a bird, bat, or insect uses to fly.
- spider - A small eight-legged creature that spins webs to catch insects.
- cattle - Cows and bulls kept on a farm for their milk or meat.
- breed - A particular type of a domestic animal within a species.
- mule - An animal that is the offspring of a male donkey and a female horse.
- wildlife - Wild animals and plants living in their natural surroundings.
- habitat - The natural place where a plant or animal lives.
- mare - a female horse or other equine animal
- trout - a common freshwater fish with a speckled body, prized as a game fish
- hive - a structure where bees live, especially one made or kept by people
- pope - An honorary title of the Roman Catholic bishop of Rome as father and head of his church, a sovereign of the Vatican city state.
- envious - Feeling or exhibiting envy; jealously desiring the excellence or good fortune of another; maliciously grudging.
- das - any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes
- reservoir - anything (a person or animal or plant or substance) in which an infectious agent normally lives and multiplies
- grasshopper - a plant-eating insect with powerful hind legs adapted for jumping
- shark - a mostly marine fish with a cartilaginous skeleton, rough skin, and several rows of teeth
- alligator - a large semiaquatic reptile related to crocodiles, with a broad rounded snout
- duckling - a young duck
- firefly - a beetle of the family Lampyridae whose abdomen produces light, especially at twilight
- cheetah - a slender, long-legged spotted cat of Africa and Iran, noted for its exceptional speed over short distances
- anteater - a toothless mammal of tropical America with a long snout and tongue, specialized for feeding on ants and termites
- flamingo - a tall wading bird with long legs, a curved bill, and usually pink or reddish feathers
- goldfish - a small domesticated freshwater fish, usually orange or golden, commonly kept in ponds or aquariums

### B2
- wolf - A large wild animal of the dog family that hunts in groups.
- stock - The supply of goods that a shop or business has available to sell.
- species - A group of living things that are similar and can breed with one another.
- fox - A wild animal like a small dog, with reddish-brown fur, pointed ears, and a long bushy tail.
- donkey - A grey animal with long ears, similar to a small horse, used for carrying loads.
- steer - To control the direction of a vehicle, boat, or aircraft.
- dwarf - To be so much bigger than something else that it makes it look small.
- ox - An adult male of the cattle family, often used to pull heavy loads.
- leash - A strap, cord, or rope used to hold and control an animal, especially a dog.
- thigh - The part of the leg between the hip and the knee.
- paw - The foot of an animal such as a dog, cat, or bear, that has claws.
- hybrid - Something made by combining two different things.
- zebra - A wild African animal like a horse, with black and white stripes.
- beagle - A small dog with short legs and a smooth coat, often kept as a pet and used for hunting.
- prawn - A small sea creature with a shell and ten legs, eaten as food and similar to a shrimp.
- birdcage - A cage for keeping a pet bird in.
- polar bear
- rein - a long, narrow strap attached to a horse's bit, used to guide or control the animal
- rodent - relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing
- fishery - the business or activity of catching, processing, and selling fish
- herring - a small oily sea fish often eaten as food
- therein - (formal) in or into that thing or place
- mane - Longer hair growth on back of neck of an animal, especially a horse or lion.
- sergeant - The highest rank of noncommissioned officer in some non-naval military forces and police.
- bitterness - The quality of feeling bitter; acrimony, resentment; the quality of exhibiting such feelings.
- steamer - A dish made by cooking diced meat very slowly in a tightly sealed pot with a minimum of flavourings, allowing it to steam in its own juices; specifically such a dish made with kangaroo meat.
- butler - The chief male servant of a household who has charge of other employees, receives guests, directs the serving of meals, and performs various personal services.
- cavalry - The military arm of service that fights while riding horses.
- nightingale - A Eurasian and African songbird, Luscinia megarhynchos, family Muscicapidae, famed for its beautiful singing at night; a common nightingale.
- unarmed - (used of persons or the military) not having or using arms
- blackbird - To enslave someone, especially through chicanery or force
- outcast - To cast out; to banish.
- manure - To cultivate by manual labor; to till; hence, to develop by culture.
- scandalous - giving offense to moral sensibilities and injurious to reputation
- slime - cover or stain with slime
- bowler - A bowler hat; a round black hat formerly popular among British businessmen.
- hummingbird - a tiny bird that can hover and feeds on nectar
- jellyfish - a soft sea animal with a gelatinous body and stinging tentacles
- horseshoe - a U-shaped metal plate fixed to a horse's hoof
- hart - an adult male deer, especially a red deer more than five years old
- coo - to make the soft, low call characteristic of a dove or pigeon
- martin - a swallow-like bird with long pointed wings that catches insects while flying
- jay - a noisy, often brightly colored bird of the crow family, typically with a crest
- cobweb - a spider's web, especially an old, dusty, or irregular one
- stork - a large long-legged wading bird with a long straight bill, belonging to the family Ciconiidae
- finch - a small songbird, typically with a short conical bill adapted for eating seeds
- armadillo - a burrowing mammal of the Americas whose body is protected by jointed bony plates
- herbivorous - feeding chiefly or entirely on plants
- lobster - a large marine crustacean with a hard shell, long antennae, and, in many species, large claws
- oyster - a marine bivalve mollusk with a rough, irregular shell
- neigh - of a horse, to make its characteristic high, prolonged cry
- hyena - a strong-jawed carnivorous mammal of Africa and Asia, known for scavenging and for calls that can resemble laughter
- kennel - a small shelter or house for a dog
- pelican - a large waterbird with a long bill and a broad, expandable throat pouch used for catching fish
- lemur - a primate native to Madagascar and nearby islands, typically with large eyes, a pointed face, and a long tail
- collie - a dog of any of several related herding breeds, typically alert, agile, and long-muzzled
- cockroach - a fast-running, usually flattened insect of the order Blattodea, several species of which are common household pests
- setter - a long-haired hunting dog trained to indicate the location of game birds
- honeycomb - a structure of hexagonal wax cells made by bees to hold honey, pollen, and developing young
- codfish - a cod, especially one caught or prepared for food
- dormouse - a small Old World rodent with a furry tail that hibernates or becomes torpid in cold weather
- falcon - a fast-flying bird of prey of the genus Falco, with long pointed wings and a hooked beak
- shellfish - an aquatic invertebrate with a shell, especially a mollusk or crustacean
- flipper - a broad, flat limb adapted for swimming in animals such as whales, seals, turtles, and plesiosaurs
- mammoth - a large extinct elephant-like mammal of the genus Mammuthus, often with long curved tusks and a hairy coat
- centipede - a predatory arthropod of the class Chilopoda, with a flattened segmented body and one pair of legs on each leg-bearing segment
- poodle - a breed of intelligent dog with a dense, curly coat, occurring in standard, miniature, and toy sizes
- haddock - a North Atlantic marine fish related to cod and widely caught for food
- octopus - a soft-bodied sea animal with eight sucker-bearing arms
- dodo - a large flightless bird formerly native to Mauritius that became extinct in the seventeenth century
- warren - a connected system of burrows in which rabbits live, or the rabbits occupying it
- catfish - a mainly freshwater fish with whiskerlike barbels around its mouth
- beehive - a structure or container in which a colony of bees lives
- millipede - an elongated terrestrial arthropod of the class Diplopoda, with most apparent body segments bearing two pairs of legs
- prosternum - entomology: the ventral exoskeletal plate of an insect's prothorax
- termite - a pale, soft-bodied social insect that lives in a colony and feeds chiefly on wood or other cellulose-rich material
- chipmunk - a small striped ground squirrel with cheek pouches, native chiefly to North America
- springer - a springer spaniel, a medium-sized gundog bred to flush game

### C1
- buck - To resist or oppose something, especially a trend or rule.
- nest - A structure that a bird or other animal builds to lay eggs and raise its young.
- gut - The stomach or belly, especially a large one.
- predator - An animal that hunts and kills other animals for food.
- otter - A small river or sea animal with webbed feet and thick brown fur that eats fish.
- ewe - An adult female sheep.
- antenna - one of a pair of mobile appendages on the head of e.g. insects and crustaceans
- fist - the signature style of a Morse code operator
- solemnity - The quality of being deeply serious and sober or solemn.
- uterus - a hollow muscular organ in the pelvic cavity of females
- repent - To feel pain, sorrow, or regret for what one has done or omitted to do; the cause for repenting may be indicated with "of".
- nausea - A feeling of illness or discomfort in the digestive system, usually characterized by a strong urge to vomit.
- inwardly - with respect to private feelings
- peat - Soil formed of dead but not fully decayed plants found in bog areas, often burned as fuel.
- wearily - In a weary manner; feeling weary.
- disclaimer - A denial, disavowal, or renunciation, as of a title, claim, interest, estate, or trust; relinquishment or waiver of an interest or estate.
- restlessness - the quality of being ceaselessly moving or active
- castration - surgical removal of the testes or ovaries (usually to inhibit hormone secretion in cases of breast cancer in women or prostate cancer in men)
- greedily - In a greedy manner; with keen or ardent desire.
- terrier - Someone displaying terrier-like qualities such as determined pursuit.
- ordeal - A trial in which the accused was subjected to a dangerous test (such as ducking in water), divine authority deciding the guilt of the accused.
- rye - A grain used extensively in Europe for making bread, beer, and (now generally) for animal fodder.
- serenely - in a peacefully serene manner
- constable - One holding the lowest rank in most Commonwealth police forces. (See also chief constable.)
- corral - to collect or gather
- guardianship - The office or position of one acting as a guardian or conservator, especially in a legal capacity.
- nasal - sounding as if the nose were pinched
- uncontrolled - Not controlled; not under control.
- doggedly - with obstinate determination
- irrepressible - impossible to repress or control
- heiress - A woman who has a right of inheritance or who stands to inherit.
- nape - The back part of the neck.
- tail-feather - one of the feathers in a bird's tail
- wing-feather - one of the feathers of a bird's wing
- breeding-season - the time of year when animals mate and produce young
- tentacle - a long, flexible organ of an animal, used for touching, grasping, feeding, or movement
- hoof - the hard covering at the end of the foot of a horse, deer, sheep, or other ungulate
- antler - one of the branching bony structures grown and usually shed each year by deer and related animals
- stallion - an adult uncastrated male horse, especially one kept for breeding
- louse - a small, wingless parasitic insect that lives on the skin, hair, or feathers of a person or animal
- pincer - one of a pair of curved claws or jaws used by an arthropod to grasp or cut
- quill - the stiff hollow shaft of a feather, or a large feather with such a shaft
- gnat - a very small two-winged fly, especially one that swarms or bites
- parakeet - any of numerous small or medium-sized parrots with a slender body and a long tail
- warthog - a large African wild pig with tusks and wartlike growths on its face
- earwig - an elongated insect with a pair of forceps-like pincers at the end of its abdomen
- drake - an adult male duck
- hawk - a bird of prey with keen eyesight, broad wings, and a hooked bill
- starling - a gregarious songbird, often dark and glossy, belonging to the family Sturnidae
- mite - any of numerous minute arachnids, many of which live as parasites on animals or plants
- caw - the harsh cry made by a crow, rook, or raven
- ibis - a long-legged wading bird with a long, downward-curving bill used to probe mud for food
- tigress - a female tiger
- peahen - an adult female peafowl
- porpoise - a small toothed whale of the family Phocoenidae, typically with a blunt snout
- burro - a small donkey, especially one used as a pack animal in the southwestern United States or Mexico
- puss - an informal or affectionate term for a cat
- forepaw - either of the two front paws of a four-legged animal
- gill - a respiratory organ by which fish and many other aquatic animals extract dissolved oxygen from water
- invertebrate - an animal without a backbone, such as an insect, mollusk, or worm
- mangy - affected by mange, or looking as though affected by it
- shrew - a small, active, insect-eating mammal with a pointed snout, resembling a mouse
- wren - a very small, active songbird, typically brown, with a short upright tail
- manatee - a large, slow-moving, plant-eating aquatic mammal of the genus Trichechus, with paddle-like flippers and a broad rounded tail
- mink - a small, dark-furred semiaquatic carnivorous mammal related to weasels
- stinger - a sharp organ used by an insect, scorpion, stingray, or other animal to wound or inject venom
- macaw - any of several large, long-tailed parrots native to Central and South America, usually with powerful bills and brightly colored plumage
- axolotl - a critically endangered Mexican salamander, Ambystoma mexicanum, that normally remains aquatic and retains larval features such as external gills as an adult
- budgerigar - a small Australian parakeet, Melopsittacus undulatus, commonly kept as a cage bird and bred in many colors
- stoat - Mustela erminea, the ermine or short-tailed weasel, a mustelid native to Eurasia and North America, distinguished from the least weasel by its larger size and longer tail with a prominent black tip.
- cockatrice - a legendary monster with features of a rooster and serpent, traditionally said to kill with its gaze

### C2
- venomous - Of an animal: producing venom and able to inject it by biting or stinging.
- reptilian - Relating to reptiles such as snakes, lizards, and crocodiles.
- carnivorous - relating to or characteristic of carnivores
- carnivore - any animal that feeds on flesh
- boisterous - violently agitated and turbulent
- avian - Relating to or typical of birds.
- ruminant - A hoofed animal, such as a cow, sheep, or deer, that chews the cud and has a stomach with several compartments.
- spaniel - any of several breeds of small to medium-sized gun dogs with a long silky coat and long frilled ears
- mastiff - an old breed of powerful deep-chested smooth-coated dog used chiefly as a watchdog and guard dog
- greyhound - a tall slender dog of an ancient breed noted for swiftness and keen sight
- mammal - any warm-blooded vertebrate having the skin more or less covered with hair
- coleopterous - Of or pertaining to beetles of the order Coleoptera.
- fantail - Any of several birds, of the genus Rhipidura, from Asia, Australia and New Zealand.
- capybara - pig-sized tailless South American amphibious rodent with partly webbed feet
- coypu - aquatic South American rodent resembling a small beaver
- hare - swift timid long-eared mammal larger than a rabbit having a divided upper lip and long hind legs
- emu - large Australian flightless bird similar to the ostrich but smaller
- ostrich - fast-running African flightless bird with two-toed feet
- agouti - agile long-legged rabbit-sized rodent of Central America and South America and the West Indies
- mollusc - invertebrate having a soft unsegmented body usually enclosed in a shell
- heron - grey or white wading bird with long neck and long legs and (usually) long bill
- carnivora - Carnivorans.
- dugong - sirenian tusked mammal found from eastern Africa to Australia
- larva - an immature form of an insect, amphibian, or other animal, usually very different from the adult
- cirripede - a marine crustacean such as a barnacle, with feathery appendages for catching food
- crustacean - an arthropod such as a crab, lobster, shrimp, or barnacle, usually with a hard shell
- pupa - an insect in the inactive stage between larva and adult
- bevy - a flock of birds, especially when gathered close together on the ground
- dulcet - pleasing to the ear
- fawn - A young deer.
- halcyon - Pertaining to the halcyon or kingfisher.
- hidebound - Bound with the hide of an animal.
- hobble - strap the foreleg and hind leg together on each side (of a horse) in order to keep the legs on the same side moving in unison
- mesmerize - To exercise mesmerism on; to affect another person, such as to heal or soothe, through the use of animal magnetism.
- raffish - marked by a carefree unconventionality or disreputableness
- seine - fish with a seine
- thrifty - Thriving, prosperous, successful; (of an animal or plant) growing rapidly or vigorously.
- untrammeled - not confined or limited
- viscous - Of or pertaining to viscosity.
- yoke - stable gear that joins two draft animals at the neck so they can work together as a team
- effectually - in an effectual or successful manner
- alpha - early testing stage of a software or hardware product
- pheasant - A bird of family Phasianidae, often hunted for food.
- frown - A wrinkling of the forehead with the eyebrows brought together, typically indicating displeasure, severity, or concentration.
- sled - A small, light vehicle with runners, used recreationally, mostly by children, for sliding down snow-covered hills; no draft animal pulls it.
- wretch - An unhappy, unfortunate, or miserable person.
- molt - periodic shedding of the cuticle in arthropods or the outer skin in reptiles
- swamp - a situation fraught with difficulties and imponderables
- cock - to tilt or slant to one side
- horseback - on the back of a horse
- crust - to form a crust or form into a crust
- pony - A small serving of an alcoholic beverage, especially beer.
- steamboat - A boat or vessel propelled by steam power.
- frock - To clothe (somebody) in a frock.
- sulky - silent and withdrawn after being upset
- latch - fasten with a latch
- coachman - A man who drives a horse-drawn coach, a male coach driver.
- polygamy - The condition of having more than one spouse or marriage partner at one time.
- velvet - A closely woven fabric (originally of silk, now also of cotton or man-made fibres) with a thick short pile on one side.
- dogmatism - the intolerance and prejudice of a bigot
- eel - Any freshwater fish of the order Anguilliformes, which are elongated and resemble snakes.
- quadruped - having four feet
- vertebrate - having a backbone or spinal column
- apelike - Similar to an ape in appearance or behaviour.
- thorax - The region of the mammalian body between the neck and abdomen as well as the cavity containing the heart and lungs.
- trance - A state of awareness, concentration, or focus that filters experience and information (for example, a state of meditation or possession by some being).
- grindstone - a revolving stone shaped like a disk
- bushy - Like a bush in having many branches that spread out densely in all directions.
- dorsal - belonging to or on or near the back or upper surface of an animal or organ or part
- hansom - Ellipsis of Hansom cab.
- meagre - An edible fish, of species Argyrosomus regius, of the family Sciaenidae, found from the Black Sea to the eastern Atlantic.
- chestnut - of a golden brown to reddish brown color
- faintness - the trait of lacking boldness and courage
- footman - A man in waiting; a male servant whose duties are to attend the door, the carriage, the table, etc.
- gallows - A wooden framework on which persons are executed by hanging.
- lizard - Any reptile of the order Squamata that is not a snake or part of Mosasauria — typically characterised by a rounded torso, a short neck with an elevated head, four limbs and a long tail, although some species are legless.
- muzzle - fit with a muzzle
- boar - A wild boar (Sus scrofa), the wild ancestor of the domesticated pig.
- stealthily - in a stealthy manner
- fireside - A supplementary meeting in The Church of Jesus Christ of Latter-day Saints.
- guanaco - wild llama
- yelp - a sharp, high-pitched cry, especially by a dog
- gloomily - with gloom
- moose - large northern deer with enormous flattened antlers in the male
- pterodactyl - Any pterosaur.
- rust - a plant disease that produces a reddish-brown discoloration of leaves and stems
- strenuously - In a strenuous manner.
- bourgeoisie - A class of citizens who were wealthier members of the third estate.
- condor - Either of two New World vultures, Vultur gryphus of the Andes or Gymnogyps californianus, a nearly extinct vulture of the mountains of California.
- goldfinch - small European finch having a crimson face and yellow-and-black wings
- snuff - inhale audibly through the nose
- trachea - membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi
- bullfinch - A large, thick quickset hedge.
- obnoxious - Unjustly disagreeable, argumentative or objectionable; brazenly rude.
- ruff - common Eurasian sandpiper
- sportsman - A man who engages in sports; an athlete.
- ungrateful - not feeling or showing gratitude
- antelope - The pronghorn, Antilocapra americana.
- bloodless - destitute of blood or apparently so
- schoolmaster - Anything that teaches.
- bough - A tree-branch, usually a primary one directly attached to the trunk.
- complacency - self-satisfaction, contentment with one's situation
- hermaphrodite - Cosexual: an organism possessing both types of gonads; a flower possessing both stamens and pistils.
- oar - A type of lever used to propel a boat, having a flat blade at one end and a handle at the other, and pivoted in a rowlock atop the gunwale, whereby a rower seated in the boat and pulling the handle can pass the blade through the water by repeated strokes against the water's resistance, thus moving the boat.
- prowess - Skillfulness or extraordinary ability in a particular area of expertise; dexterity, mastery, or proficiency.
- shaggy - Having long, thick, and uncombed hair, fur or wool.
- stunt - a difficult, unusual, or dangerous feat
- womb - In female mammals, the organ in which the young are conceived and grow until birth; the uterus.
- coccyx - The final (bottom-most) fused vertebrae at the base of the spine, the tailbone.
- cookery - The art and practice of preparing food for consumption, especially by the application of heat; cooking.
- drone - A male ant, bee, or wasp, which does not work but can fertilize the queen.
- harem - The private section of a Muslim household forbidden to male strangers.
- implore - To beg or plead for (something) earnestly or urgently; to beseech.
- incrustation - An accumulated characteristic of a person that disguises their true nature.
- instigation - The act of instigating, or the state of being instigated; incitement; especially to evil or wickedness.
- loon - A crazy or deranged person; a lunatic.
- mandible - the jaw in vertebrates that is hinged to open the mouth
- mimicry - An act or ability to simulate or effect the appearance, characteristics, or behavior of someone or something else.
- pore - A tiny opening in the skin.
- topmost - At or nearest to the top; uppermost; being the very highest.
- wantonly - in a wanton manner
- creak - a squeaking sound
- exasperation - actions that cause great irritation or even anger
- gander - A male goose.
- marsupial - of or relating to the marsupials
- orifice - an aperture or hole that opens into a bodily cavity
- peck - To strike or pierce with the beak or bill (of a bird).
- poundage - Weight, especially body weight.
- woodchuck - reddish brown North American marmot
- aviary - a building where birds are kept
- bluish - Having a tint or hue similar to the colour blue.
- cavalcade - A procession of riders, vehicles, ships, etc.
- firelight - The light of a fire, such as from a campfire or fireplace.
- hippopotamus - The common hippopotamus (Hippopotamus amphibius)
- leathery - Having the consistency, feel, or texture of leather.
- locust - A fruit or pod of a carob tree (Ceratonia siliqua).
- mammary - Of or relating to the mamma or breast (of a woman or a female animal).
- pickerel - A freshwater fish of the genus Esox.
- retinue - A group of attendants or servants, especially of someone considered important.
- rogue - A scoundrel, rascal or unprincipled, deceitful, and unreliable person.
- sexton - A church official who looks after a church building and its graveyard and may act as a gravedigger and bell ringer.
- thistle - any of numerous plants of the family Compositae and especially of the genera Carduus and Cirsium and Onopordum having prickly-edged leaves
- chamois - A short-horned goat antelope native to mountainous terrain in southern Europe; Rupicapra rupicapra.
- gauze - A similar bleached cotton fabric used as a surgical dressing.
- gyroscope - An apparatus composed of a wheel which spins inside of a frame (gimbal) and causes the balancing of the frame in any direction or position. In the form of a gyroscopic stabilizer, used to help keep aircraft and ships steady.
- homicidal - characteristic of or capable of or having a tendency toward killing another human being
- horseman - A soldier on horseback, especially a cavalryman.
- kingfisher - a nonpasserine large-headed bird with a short tail and long sharp bill
- molasses - A thick, sweet syrup drained from sugarcane, especially (Canada, US) the still thicker and sweeter syrup produced by boiling down raw molasses.
- monocle - lens for correcting defective vision in one eye
- petulance - Rudeness, insolence.
- raven - feed greedily
- steed - A stallion, especially one used for riding.
- tallow - A hard animal fat obtained from suet, etc.; used in cooking as well as to make candles, soap and lubricants.
- tapir - An odd-toed ungulate of the genus Tapirus with a long prehensile upper lip.
- unwearied - Not wearied, not tired.
- wattle - A construction of branches and twigs woven together to form a wall, barrier, fence, or roof.
- woodpecker - Any bird of species-rich family Picidae, with a strong pointed beak suitable for pecking holes in wood.
- yeomanry - a British volunteer cavalry force organized in 1761 for home defense later incorporated into the Territorial Army
- stridulation - the production of a shrill sound by rubbing body parts together, especially in insects
- nidification - nest-building by birds or other animals
- anthropomorphous - having human form or humanlike characteristics
- jackdaw - a small black-and-gray Eurasian corvid related to crows and often nesting in buildings, cliffs, or trees
- capercaillie - a very large Eurasian woodland grouse, the male of which has dark plumage and a fan-shaped tail
- chela - a pincerlike claw at the end of a limb of a crustacean or arachnid
- elytron - one of the hardened front wings of a beetle or similar insect that covers and protects the flight wings
- branchia - zoology: a gill or another respiratory organ with the same function in an aquatic animal
- aphis - technical and now uncommon: an aphid, especially an aphid of the genus Aphis
- hackle - a long, narrow feather from a bird's neck or back, especially one used in an artificial fishing fly
- egret - a long-legged wading bird in the heron family, often white and sometimes bearing long breeding plumes
- tern - a slender seabird related to gulls, typically with long pointed wings and a forked tail
- wader - a long-legged bird that searches for food in shallow water or wet ground
- cuttlefish - a marine cephalopod with eight arms, two longer tentacles, and a broad internal shell called a cuttlebone
- orang - dated: a shortened form of orangutan, the large arboreal ape native to Borneo and Sumatra
- nervure - one of the rigid veins that support an insect's wing
- plover - a compact shorebird with a short bill, pointed wings, and a habit of running along open ground or water margins
- toucan - a tropical American bird with a very large, often brightly colored bill
- petrel - a long-winged oceanic seabird of the order Procellariiformes, often seen skimming close to the waves
- clasper - a specialized appendage used to hold a mate during reproduction, especially in male fish, insects, or crustaceans
- shrike - a predatory songbird with a hooked bill, known for impaling uneaten prey on thorns or wire
- muskrat - a semiaquatic North American rodent with dark brown fur and a long, flattened, scaly tail
- bustard - a large, mainly ground-dwelling bird of open country in the Old World, with long legs and powerful flight
- stickleback - a small freshwater or coastal fish of the family Gasterosteidae, distinguished by separate sharp spines along its back
- biped - an animal, person, or machine that walks on two feet or legs
- insectivorous - feeding mainly or entirely on insects
- lancelet - a small translucent, fishlike marine chordate that retains a notochord and usually lives partly buried in sand
- peewit - a northern lapwing, a crested wading bird of open fields and wetlands
- rattlesnake - any of several venomous American pit vipers with interlocking horny segments at the tail tip that produce a rattling warning sound
- retriever - a gun dog trained to find and bring back shot game, or a dog belonging to one of the breeds developed for that work
- lair - a place where a wild animal lives or hides
- wapiti - the North American elk (Cervus canadensis), a large deer whose males bear branching antlers
- bison - a large wild bovine of the genus Bison, with a massive head, short horns, and a shaggy forequarter
- bullock - a young bull that has been castrated, especially one raised or used as an ox
- deerhound - a very large, rough-coated sighthound originally bred in Scotland to hunt deer
- linnet - a small Old World finch whose male develops crimson markings on the forehead and breast
- anopheline - a mosquito of the genus Anopheles or a closely related genus, including species that transmit malaria
- chough - either of two glossy black Eurasian birds of the genus Pyrrhocorax, noted for red or yellow bills and legs
- iguanodon - a large herbivorous ornithopod dinosaur of the Early Cretaceous genus Iguanodon, known for its thumb spikes
- rookery - a breeding colony or nesting place of rooks, penguins, seals, or other social animals
- panther - a black-coated leopard, or less often a black-coated jaguar
- vulpine - of, relating to, or resembling a fox
- whinny - a gentle or relatively high-pitched neigh made by a horse
- mastodon - an extinct elephant-like mammal of the genus Mammut, distinguished from mammoths and elephants by the cone-shaped cusps on its molar teeth
- cur - a dog regarded as aggressive, inferior, or of mixed breed; now usually contemptuous
- saurian - a lizard or lizardlike reptile, especially a large or prehistoric reptile
- leveret - a young hare, especially one less than a year old
- bloodhound - a large scent hound with an exceptionally keen sense of smell, used to track people
- spoor - the tracks, scent, droppings, or other trail left by an animal
- roost - a perch on which a bird rests or sleeps
- skunk - a small black-and-white American mammal that can spray a powerful-smelling defensive fluid
- zoophyte - in older zoology, a plantlike invertebrate such as a coral, sponge, or sea anemone
- albatross - a very large oceanic bird with long, narrow wings adapted for gliding great distances
- gibbon - a small tailless ape of Southeast Asian forests, with very long arms adapted for swinging between branches
- greenfinch - a small Old World finch of the genus Chloris, typically with greenish plumage and bright yellow areas on the wings and tail
- hamadryas - a large baboon native to northeastern Africa and the Arabian Peninsula, whose adult males have a silvery mantle
- foal - a young horse or other equine, especially one less than a year old
- llama - a domesticated South American camelid kept as a pack animal and for its wool and meat
- menagerie - a collection of wild or unusual animals kept for exhibition
- mew - a short, high-pitched cry made by a cat or similar animal
- crayfish - a small freshwater crustacean resembling a lobster, or its flesh used as food
- earthworm - a segmented worm that lives in soil, where its burrowing helps mix and aerate the ground
- starfish - a star-shaped marine echinoderm, typically with five or more arms radiating from a central disc
- vixen - a female fox
- radula - a ribbonlike feeding organ bearing rows of tiny teeth, used by most mollusks to scrape or cut food
- ursine - relating to, characteristic of, or resembling a bear
- hutch - a cage or enclosed box in which rabbits or other small animals are kept
- simian - relating to monkeys and apes
- conger - any of several large, scaleless marine eels of the genus Conger or family Congridae, found in temperate and tropical coastal waters
- bedbug - a small, flat, nocturnal insect that hides near sleeping places and feeds on the blood of people or other warm-blooded animals
- burrower - an animal that digs a hole or tunnel, especially one that lives in the shelter it makes
- sprat - a small silvery marine fish of the herring family, especially the European sprat, eaten as food or used as bait
- finny - having fins or resembling a fin
- sturgeon - any of a family of usually large, long-bodied freshwater or migratory fishes with rows of bony plates, valued especially for roe used as caviar
- frugivorous - feeding chiefly or entirely on fruit
- palp - a paired sensory or feeding appendage near the mouth of an arthropod or another invertebrate
- anemone - a sea animal related to coral, with a cylindrical body and a ring of stinging tentacles
- plesiosaurus - a marine reptile of the extinct genus Plesiosaurus, with a small head, long neck, broad body, and four paddle-shaped limbs
- forefoot - either of the front feet of a four-legged animal
- water ouzel - a dipper: any of the small aquatic songbirds of the genus Cinclus (family Cinclidae) that wade and dive in swift streams, especially the white-throated dipper in Eurasia or the American dipper in North America
- kulan - an Asiatic wild ass (Equus hemionus) of the Central Asian steppes and deserts, especially the Turkmen kulan subspecies (E. h. kulan)
- mistle thrush - a large thrush (Turdus viscivorus) of Europe, North Africa, and temperate Asia, with pale, boldly spotted underparts, noted for eating and vigorously defending berry-bearing trees, including mistletoe
- swim bladder - a gas-filled internal sac present in many bony fishes, used chiefly to regulate buoyancy and maintain depth and, in some species, also involved in respiration, hearing, or sound production
- foxhound - a medium-sized scent hound of the English or American breed developed for pursuing foxes and noted for its stamina
- horsewoman - a woman who rides horses, especially one skilled in riding or managing them
- tyrant flycatcher - any bird of the large New World family Tyrannidae, whose members typically have a broad, flattened bill and feed mainly on insects
- willow wren - a traditional British name for the willow warbler (Phylloscopus trochilus), also formerly applied to the closely related chiffchaff
- albacore - a large long-finned tuna (Thunnus alalunga) of warm and temperate oceans, valued as food for its pale flesh
- iguana - a large tropical American lizard, typically with a crest of spines along its back and a long tail
- viviparous - producing live young that developed inside the parent's body rather than laying eggs
- coney - archaic or historical: a rabbit, especially the European rabbit, or its fur
- ganoid - having hard, shiny, enamel-like scales of the type found on gars and some other fishes
- stegosaurus - a large herbivorous dinosaur of the genus Stegosaurus, with upright plates along its back and spikes on its tail
- cockatoo - a parrot of the family Cacatuidae, typically having a prominent movable crest
- gamecock - a rooster bred and trained for cockfighting
- fallfish - a large silvery freshwater minnow (Semotilus corporalis) native to streams of northeastern North America
- exuvia - a skin, shell, exoskeleton, or other outer covering shed by an animal during molting
- woodcock - a stocky woodland wading bird of the genus Scolopax, with mottled plumage and a long slender bill
- allosaurus - a large two-legged carnivorous dinosaur of the genus Allosaurus that lived during the Late Jurassic period
- hornet - a large social wasp, especially one of the genus Vespa, capable of delivering a powerful sting
- whippoorwill - a nocturnal North American nightjar whose repeated call sounds like 'whip-poor-will'
- ichthyosaurus - an extinct dolphin-shaped marine reptile of the genus Ichthyosaurus, known chiefly from Early Jurassic rocks of Europe
- megalosaurus - a large meat-eating theropod dinosaur of the genus Megalosaurus, known from Middle Jurassic fossils in England
- phoebe - any of several small North American flycatchers of the genus Sayornis, especially the eastern phoebe
- shiner - any of numerous small, silvery North American freshwater fishes, especially minnows used as bait
- veery - a tawny North American woodland thrush noted for its descending, flute-like song
- python - a large nonvenomous constricting snake of the family Pythonidae, native chiefly to Africa, Asia, and Australia
- ortolan - a small migratory Eurasian bunting, Emberiza hortulana, historically fattened and eaten as a delicacy
- caiman - any crocodilian of the subfamily Caimaninae, native to Central and South America and closely related to alligators
- whicker - a soft, breathy neigh or whinny made by a horse
- fledge - of a young bird, to develop the feathers needed for flight or become able to fly
- cockerel - a young male domestic chicken, especially one less than a year old
- dobbin - dated: a quiet, patient horse used for ordinary farm work or transport
- bittern - a secretive, brown-streaked marsh bird of the heron family, noted for the male's deep booming call
- bloodsucker - an animal, especially a leech or biting insect, that feeds by sucking blood
- bluebird - any of three North American thrushes of the genus Sialia, whose males have conspicuous blue plumage
- bream - any of various deep-bodied freshwater fishes, especially the European common bream or North American sunfishes
- caribou - a North American reindeer, a large Arctic and subarctic deer in which both sexes can grow antlers
- chanticleer - literary: a rooster, especially one personified in a fable or story
- imago - the final, sexually mature stage of an insect after metamorphosis
- neuration - the pattern or arrangement of veins, especially in an insect's wing and sometimes in a leaf
- whelp - a young dog or wolf, or the young of certain other carnivorous mammals
- gizzard - a thick-walled muscular part of the digestive tract that grinds food in birds and various other animals
- quagga - an extinct southern African subspecies of plains zebra, striped mainly on the head and front of the body
- auk - any of a family of compact black-and-white northern seabirds adapted for swimming and diving, including puffins, guillemots, and murres
- bantam - a chicken of a naturally small breed or a miniature variety of a larger breed
- featherless - having no feathers or having lost the usual covering of feathers
- nuthatch - a small, strong-footed songbird that climbs tree trunks, often head downward, and feeds on nuts and insects
- ovipositor - a tubular or blade-like organ used by a female insect or certain other animals to place or lay eggs
- runt - the smallest or weakest animal in a litter
- silkworm - the silk-producing caterpillar of a moth, especially the domesticated Bombyx mori raised for commercial silk
- teleostean - relating to the teleosts, the large group containing most living bony fishes
- turbit - a breed of fancy domestic pigeon with a short beak, a peaked or shell-shaped crest, and a frill of feathers on the breast
- carapace - a hard protective shell covering all or part of the back of an animal such as a turtle, crab, or barnacle
- grebe - a freshwater diving bird with lobed toes, a pointed bill, and legs set far back on the body
- ichneumon - an ichneumon wasp, a usually slender parasitoid wasp whose larvae develop in or on other arthropods
- salamander - a long-bodied amphibian with a tail and short legs, superficially resembling a lizard
- asp - a venomous snake of North Africa traditionally identified with the cobra said to have killed Cleopatra
- courser - historical or literary: a swift, strong horse, especially one ridden in battle
- falconry - the practice or sport of training falcons and other birds of prey to hunt wild quarry
- ermine - a stoat in its white winter coat, apart from the black tip of its tail
- eyrie - the nest of an eagle or other bird of prey, usually built in a high place
- megatherium - an extinct giant ground sloth of the genus Megatherium, native to South America during the Pliocene and Pleistocene
- melanism - an unusually high amount of dark melanin pigment in an animal or person, making the skin, fur, feathers, or eyes darker than usual
- natatory - relating to swimming or adapted for movement through water
- operculum - a hard flap or plate that covers an opening in an animal, such as a fish's gills or a snail's shell
- pachydermatous - of, relating to, or characteristic of pachyderms
- sphex - a sand or digger wasp of the genus Sphex or a closely related genus
- marten - a slender, agile, tree-climbing mammal of the weasel family, especially one of the genus Martes
- mavis - the song thrush; chiefly literary or Scottish
- oriole - any of various brightly colored songbirds, including New World orioles of the genus Icterus and Old World orioles of the family Oriolidae
- pewee - a small North American flycatcher of the genus Contopus, named for its call
- lapdog - a small, tame dog that can be held comfortably on a person's lap
- midge - a very small two-winged fly, including both biting and non-biting kinds
- carthorse - a large, strong horse used for pulling carts or other heavy loads
- curculio - a weevil of the genus Curculio, especially one whose larvae develop inside acorns or nuts
- dromedary - the one-humped camel of North Africa and southwestern Asia
- equine - relating to, affecting, or resembling horses and other members of the horse family
- flycatcher - any of various small birds that characteristically catch flying insects, especially members of the Old World family Muscicapidae or the New World family Tyrannidae
- fossorial - adapted for digging or for living chiefly underground
- furcula - the forked bone formed by the fused collarbones of most birds; the wishbone
- kestrel - a small falcon that often hovers while hunting, especially the common kestrel or American kestrel
- cockchafer - a large European scarab beetle whose larvae and adults can damage crops and other vegetation
- horseflesh - the flesh of a horse, especially when used as food
- mackerel - a streamlined sea fish with dark wavy markings, commonly caught for food
- piscine - of, relating to, or characteristic of fish
- raccoon - a nocturnal North American mammal with a black facial mask, dexterous forepaws, and a ringed tail
- roach - a silvery-green European freshwater fish, or any of several related fishes
- tanager - any of numerous, often brightly colored songbirds native to the Americas
- suctorial - adapted for drawing in food or liquid by sucking
- titmouse - a small songbird of the tit family, especially one of the North American genus Baeolophus; historically also used more broadly for tits
- turnspit - a small type of dog formerly trained to turn a roasting spit by running in a wheel
- chinchilla - a small South American rodent with exceptionally dense, soft gray fur
- weevil - a plant-eating beetle, typically with a long snout, many species of which damage stored grain or crops
- newt - a small semiaquatic salamander whose adults typically have a lizard-like body and flattened tail
- cob - a strong, compact horse with short legs, commonly used for riding or pulling a carriage
- pachyderm - an elephant, rhinoceros, hippopotamus, or other large thick-skinned mammal formerly grouped in the obsolete order Pachydermata
- batrachian - a frog, toad, or other amphibian, especially one formerly classified in the group Batrachia
- bullfrog - a large frog, especially the North American species Lithobates catesbeianus, whose deep call resembles a bull's bellow
- corncrake - a secretive migratory rail that breeds in European and western Asian meadows and has a rasping repeated call
- horsy - relating to, resembling, or characteristic of horses
- nosebag - a bag containing feed that is fastened over a horse's or similar working animal's muzzle
- caddis - a caddisfly or its aquatic larva, which often builds a portable case from sand, twigs, or other debris
- cheep - a short, high-pitched cry made by a young bird or another small animal
- cowbird - a New World blackbird of the genus Molothrus that commonly lays its eggs in the nests of other bird species
- dace - a small, slender European freshwater fish, Leuciscus leuciscus, that commonly swims in shoals
- hock - the joint in the hind leg of a horse or other hoofed animal between the knee and the fetlock
- orangutan - a large, long-armed arboreal ape of the genus Pongo, native to the rainforests of Borneo and Sumatra
- palpus - a segmented sensory appendage attached to a mouthpart of an arthropod and used chiefly for touch or taste
- plantigrade - walking with the entire sole of the foot touching the ground, as humans and bears do
- polecat - a dark-brown Eurasian mustelid that releases a strong-smelling secretion when threatened
- scutella - a small horny plate or scale on a bird's foot or toe
- craw - the crop or food-storage pouch in the throat of a bird or some other animals
- pug - a small, sturdy dog with a short muzzle, broad wrinkled face, smooth coat, and tightly curled tail
- opossum - a mainly nocturnal American marsupial with a pointed snout and usually a long, nearly hairless prehensile tail
- spoonbill - a long-legged wading bird related to the ibises, with a broad, flat bill rounded at the tip
- peafowl - any of several large pheasant-family birds whose males are peacocks and females are peahens, especially species of Pavo and Afropavo
- pintail - a slender, long-necked dabbling duck whose central tail feathers form a narrow point, especially the northern pintail
- siskin - a small greenish-yellow Eurasian finch, Spinus spinus, related to the goldfinch
- blackcock - chiefly British: a male black grouse, distinguished by glossy dark plumage and a lyre-shaped tail
- eland - either of two very large African antelopes of the genus Taurotragus, with spirally twisted horns in both sexes
- lamprey - a jawless, eel-shaped aquatic vertebrate with a round sucking mouth, many species of which attach to other fish
- marmot - a large, stocky burrowing rodent of the squirrel family, typically living in mountainous or northern regions
- mussel - a marine or freshwater bivalve mollusc with an elongated shell, often living attached to rocks or buried in a riverbed
- coralline - a branching bryozoan or hydroid that resembles coral, especially in older zoological writing
- hymenopterous - belonging or relating to the insect order Hymenoptera, which includes bees, wasps, ants, and sawflies
- lynx - any of several medium-sized wild cats of the genus Lynx, with a short tail, long legs, and usually tufted ears
- blackcap - a small Eurasian warbler, Sylvia atricapilla, whose adult male has a black crown
- cassowary - a large, powerful flightless bird of the genus Casuarius, native chiefly to New Guinea and northern Australia, with a horny casque on its head
- dewlap - a loose fold of skin hanging beneath the neck of cattle, dogs, goats, and some other animals
- hoopoe - a crested Old World bird of the genus Upupa, with a long downcurved bill and boldly barred black-and-white wings and tail
- sardine - any of several small, oily, silvery fish related to herrings, especially a pilchard
- scallop - a marine bivalve mollusc with a fan-shaped, fluted shell, capable of swimming by rapidly opening and closing its shell
- amphipod - any small crustacean of the order Amphipoda, typically with a laterally compressed body and differently directed pairs of legs
- bulbul - any of a family of often gregarious songbirds native to Africa and Asia
- dragonet - any small, often brightly colored, scaleless bottom-dwelling marine fish of the family Callionymidae
- trotter - a foot of a pig or sheep, especially when prepared as food
- thoroughbred - a horse of the Thoroughbred breed, developed chiefly for racing from English mares and imported Arabian, Barb, and Turkoman stallions
- warbler - any of numerous small, active songbirds, especially members of the Old World family Sylviidae or the New World family Parulidae
- apar - a South American three-banded armadillo of the genus Tolypeutes, able to roll its armored body into a nearly complete ball
- mudcat - US: any of several catfish associated with muddy water, especially a bullhead or flathead catfish
- elater - a click beetle of the family Elateridae, able to spring into the air with a clicking movement when placed on its back
- gallinazo - any of several American vultures, especially the black vulture or turkey vulture
- glowworm - the luminous larva or wingless adult female of certain beetles, especially members of the family Lampyridae
- goatsucker - a dated name for a nightjar, a crepuscular or nocturnal bird of the family Caprimulgidae
- kinkajou - a nocturnal tree-dwelling mammal of tropical Central and South America, with golden-brown fur and a long prehensile tail
- ibex - a wild mountain goat of the genus Capra, typically with large backward-curving horns
- macaco - a historical common name for the black lemur, Eulemur macaco, and formerly for several related lemurs
- merganser - any of several fish-eating diving ducks with a narrow bill edged by toothlike serrations
- minnow - a very small freshwater fish, especially the common Eurasian minnow Phoxinus phoxinus
- ocelot - a medium-sized, mostly nocturnal wild cat of the Americas with a yellowish coat marked by dark spots and elongated blotches
- peregrine - the peregrine falcon, a powerful and widely distributed bird of prey noted for its extremely fast dive
- placental - relating to, supplied through, or possessing a placenta
- roe - a small Eurasian deer of the genus Capreolus, now usually called a roe deer
- amphioxus - a lancelet: a small, translucent, fishlike marine chordate that burrows in sand and retains a notochord throughout life
- banteng - a wild Southeast Asian ox, Bos javanicus, with marked differences in color and horn size between adult males and females
- narwhal - a medium-sized Arctic toothed whale whose male usually bears a long, spirally twisted tusk formed from an upper canine tooth
- nudibranch - a shell-less marine gastropod in the group Nudibranchia, often brightly colored and bearing exposed gills or other respiratory structures
- redstart - any of several small Old World insect-eating birds, especially members of the genus Phoenicurus, with conspicuous reddish tails
- stonechat - any of several small Old World insect-eating birds of the genus Saxicola, especially the European stonechat
- tench - a robust freshwater fish, Tinca tinca, native to Europe and western Asia and widely introduced elsewhere
- tragopan - any of several Asian forest pheasants of the genus Tragopan, whose brightly colored males have two fleshy head horns and an inflatable throat lappet
- rhea - a large, fast-running, flightless bird native to South America, with long legs and three-toed feet
- seafowl - a bird that lives or feeds at sea or along the coast; a seabird
- vicuna - a small wild South American camelid of the high Andes, related to the llama and valued for its exceptionally fine fleece
- woodlouse - a small terrestrial isopod crustacean with a rigid segmented body, usually found in damp, dark places
- crawfish - chiefly US: a small freshwater crustacean resembling a lobster; a crayfish
- currycomb - a comb with rows of short teeth or ridges, used especially for grooming a horse
- whitethroat - an Old World warbler with a conspicuously pale throat, especially the common whitethroat, Curruca communis
- bivalve - a mollusc of the class Bivalvia whose body is enclosed by two hinged shell valves, such as a clam, mussel, oyster, or scallop
- coxa - the basal segment of an arthropod limb, by which the leg is attached to the body
- crossbill - any finch of the genus Loxia whose upper and lower bill tips cross, an adaptation for extracting seeds from conifer cones
- songbird - a bird known for a musical call or song
- beroe - a transparent, often iridescent marine comb jelly of the genus Beroe, with a rounded or thimble-shaped body
- calve - of a cow or certain other large mammals: to give birth to a calf
- cavy - any short-tailed South American rodent of the family Caviidae, including the wild ancestors and relatives of guinea pigs
- hornbill - a tropical African or Asian bird with a very large curved bill, often topped by a hollow casque
- koala - a tree-dwelling Australian marsupial with thick grey fur, rounded ears, and a diet consisting mainly of eucalyptus leaves
- kudu - either of two large African antelopes whose males bear long spiral horns, the greater kudu and the lesser kudu
- lek - a place where males of certain animal species gather to perform courtship displays and compete for mates
- lory - any of several small, brightly colored Australasian parrots with brush-tipped tongues adapted for feeding on nectar and soft fruit
- nightjar - a crepuscular or nocturnal insect-eating bird with cryptic mottled plumage, large eyes, and a broad mouth
- oryx - a large African or Arabian antelope of the genus Oryx, with a pale coat, dark facial markings, and long nearly straight horns
- ouzel - an old name for the Eurasian blackbird or a related dark thrush, retained especially in ring ouzel
- periwinkle - a small edible marine snail of the genus Littorina, especially the common periwinkle
- phalanger - an Australasian arboreal marsupial of the family Phalangeridae, including the cuscuses and brushtail possums
- gar - any of several large North American freshwater fish with an armored body and long, toothed jaws
- curlew - a large migratory wading bird of the genus Numenius, with long legs and a long slender bill curved downward
- fetlock - the joint of a horse's leg between the cannon bone and the pastern, above the hoof
- fieldfare - a large Eurasian thrush, Turdus pilaris, with a gray head and rump, often seen in flocks during winter
- gannet - a large mostly white seabird of the genus Morus that catches fish by plunging steeply into the sea
- gazelle - a small, slender, swift antelope native to Africa or Asia
- sumpter - historical: a horse, mule, or other pack animal used to carry loads
- waterfowl - a duck, goose, swan, or other bird that lives or feeds chiefly on or near water; such birds collectively
- wildcat - a small or medium-sized cat that lives in the wild, especially a species resembling the domestic cat
- saiga - a migratory antelope of the Eurasian steppe with a distinctive enlarged, flexible nose
- thornback - the thornback ray or skate, Raja clavata, a ray with rough skin and rows of thornlike spines along its back and tail
- twite - a small brown finch, Linaria flavirostris, breeding in northern Eurasia and identified by its yellow bill and forked tail
- univalve - having a shell formed from one piece or valve, especially as opposed to a bivalve shell
- hawfinch - a large Eurasian finch with a very powerful bill used to crack hard seeds and fruit stones
- horsefly - a large, fast-flying fly of the family Tabanidae whose females bite mammals and feed on blood
- wagtail - a slender Old World songbird of the genus Motacilla, named for its habit of repeatedly bobbing its long tail
- wigeon - any of several medium-sized dabbling ducks of the genus Mareca, especially the Eurasian or American wigeon
- wombat - a stocky, burrowing Australian marsupial of the family Vombatidae, with short legs and strong digging claws
- bowerbird - an Australasian bird of the family Ptilonorhynchidae, whose males in many species build and decorate display structures to court females
- capelin - a small silvery smelt, Mallotus villosus, of the North Atlantic and Arctic oceans that gathers in large schools to spawn near shore
- catarrhine - a primate of the group Catarrhini, comprising Old World monkeys, apes, and humans
- cere - the fleshy or waxy skin at the base of the upper beak in certain birds, containing the nostrils
- blue jay - a crested North American jay with bright blue, white, and black plumage
- noddy - any of several stout-bodied tropical seabirds of the genus Anous, closely related to terns
- omnivorous - feeding on both plant and animal matter
- roan - having a coat in which white hairs are evenly mixed with hairs of a darker base color
- sandpiper - any of numerous small or medium-sized wading birds of the family Scolopacidae, typically with a slender bill and a piping call
- clypeus - a shieldlike plate on the front of an insect's head, between the frons and the upper lip
- drongo - an insect-eating Old World passerine bird of the family Dicruridae, typically glossy black with a forked or ornamented tail
- echidna - a spiny, toothless, egg-laying mammal of Australia and New Guinea that feeds mainly on ants and termites
- godwit - a large migratory wading bird of the genus Limosa, with a very long bill and long legs
- guillemot - a northern seabird of the auk family, especially one of the genera Uria or Cepphus, with dark upperparts and strong underwater swimming ability
- huia - an extinct glossy-black New Zealand wattlebird, Heteralocha acutirostris, whose male and female had strikingly different bill shapes
- mallard - a widespread dabbling duck, Anas platyrhynchos, from which most domestic duck breeds descend; the male has a glossy green head
- mantis - a predatory insect of the order Mantodea, with a mobile triangular head and powerful grasping forelegs held as if in prayer
- marsupium - the external abdominal pouch in which a female marsupial carries and nurses its undeveloped young
- scorpion - an arachnid with grasping pincers and a segmented tail ending in a venomous sting
- pullet - a young female chicken, especially one less than a year old or not yet laying eggs
- plastron - the lower, usually flatter part of a turtle's or tortoise's shell
- platyrrhine - a New World monkey of the primate group Platyrrhini, including capuchins, marmosets, howler monkeys, and their relatives
- pygidium - the terminal dorsal plate or last exposed abdominal segment of certain insects
- peccary - a social, piglike hoofed mammal native to the Americas, belonging to the family Tayassuidae
- cicada - a stout-bodied insect with large transparent wings, whose males produce a loud buzzing or clicking call
- gnu - a large African antelope with a heavy head, curved horns, sloping back, and long tufted tail; a wildebeest
- teal - any of several small, short-necked dabbling ducks, especially species traditionally placed in the genus Anas
- yearling - an animal between one and two years old, or otherwise classed as being in its second year
- dachshund - a small dog of a German breed with a long body, very short legs, and long drooping ears
- primate - any mammal of the order Primates, including humans, apes, monkeys, lemurs, lorises, and tarsiers
- pronghorn - a swift ruminant of western North America, Antilocapra americana, whose males have horns with a forward-pointing prong
- cobra - any of several venomous Asian or African elapid snakes that can spread the ribs of the neck to form a hood, especially a snake of the genus Naja
- lemming - a small, short-tailed rodent of Arctic and subarctic tundra regions
- medusa - the free-swimming, usually bell-shaped and sexually reproducing stage of a cnidarian, commonly recognized as a jellyfish
- pichi - a small hairy armadillo, Zaedyus pichiy, native to the dry grasslands and scrub of Argentina and Chile
- bonito - any of several swift marine fishes of the genus Sarda, related to mackerel and tuna and valued as food and sport fish
- shorthorn - a member of a British breed of cattle developed in northeastern England and raised in dairy and beef varieties
- tsetse - any blood-feeding African fly of the genus Glossina, some species of which transmit trypanosomes that cause sleeping sickness in humans and disease in livestock
- ascidian - a solitary or colonial marine tunicate of the class Ascidiacea, typically having a saclike adult body with an incurrent and an excurrent siphon
- macaque - an Old World monkey of the genus Macaca, native mainly to Asia with one wild species in northwestern Africa
- pipit - a small, slender, usually brown and streaked ground-feeding songbird, chiefly of the genus Anthus, found in open country
- scoter - a large northern sea duck of the genus Melanitta, whose adult males are predominantly black and which feeds by diving
- trogon - a tropical forest bird of the family Trogonidae, typically with brilliant plumage, a long tail, and a short broad bill
- annelid - a segmented worm of the phylum Annelida, such as an earthworm, leech, or ragworm
- crinoid - a marine echinoderm of the class Crinoidea, including sea lilies and feather stars, with feathery arms around a central body
- gaur - a very large wild bovine, Bos gaurus, native to forests of South and Southeast Asia
- goby - any of numerous generally small, bottom-dwelling fishes, especially members of the family Gobiidae, many of which have pelvic fins joined into a suckerlike disc
- muntjac - a small Asian deer of the genus Muntiacus, whose barking call gives it the alternative name barking deer
- nilgai - a large antelope, Boselaphus tragocamelus, native to the Indian subcontinent, the adult male of which is bluish gray
- springbok - a swift southern African antelope, Antidorcas marsupialis, known for making high stiff-legged leaps
- tomtit - chiefly British: a small tit, especially the blue tit
- vibrissa - one of the long, stiff, highly sensitive hairs on the snout or face of many mammals; a whisker
- zebu - a domesticated humped form of cattle, Bos taurus indicus, adapted to hot climates and widely kept in South Asia, Africa, and elsewhere
- barbule - one of the minute branches growing from a feather barb, often bearing hooks that interlock with neighboring branches
- blenny - a small, usually elongated marine fish of the blenny groups, especially a bottom-dwelling combtooth blenny of the family Blenniidae
- cephalothorax - the fused head and thorax forming the front body region of spiders, crustaceans, and some other arthropods
- dragonfly - a predatory insect with a long body, very large eyes, and two pairs of transparent wings held open at rest, especially one of the infraorder Anisoptera
- echinus - a sea urchin, especially one described by the older zoological name Echinus
- filly - a young female horse, especially one below the age at which it is called a mare
- fritillary - any of several orange, brown, or tawny butterflies, especially nymphalids with dark markings and often silvery spots beneath the wings
- gastropod - a mollusk of the class Gastropoda, including snails, slugs, limpets, and related animals, typically moving on a broad muscular foot
- guenon - a slender, long-tailed African monkey of the genus Cercopithecus, often with distinctive facial coloring
- katydid - a long-horned, usually green insect of the family Tettigoniidae, the males of many species producing loud calls by rubbing their wings
- marmoset - a small Central or South American monkey of the callitrichid group, typically with clawlike nails on most digits
- mesothorax - the middle of the three segments of an insect's thorax, bearing the second pair of legs and, when present, the forewings
- metasternum - entomology: the ventral exoskeletal plate of an insect's metathorax
- prothorax - the front of the three segments of an insect's thorax, bearing the first pair of legs but no wings
- sheldrake - an older name for a shelduck, especially a male bird of the genus Tadorna
- spiracle - zoology: an external respiratory opening in an insect or another air-breathing arthropod, connected to the tracheal system
- cayuse - Western US, historical: a small, hardy range horse or pony
- wildfowl - wild birds hunted as game or food, especially ducks, geese, and other waterfowl
- wolverine - a powerful, thickset northern mustelid, Gulo gulo, known for strength, endurance, and scavenging over a large range
- protozoon - dated: a single protozoan organism; one of the mostly microscopic unicellular organisms formerly grouped as Protozoa
- cachalot - a sperm whale, Physeter macrocephalus, especially in older natural-history or whaling writing
- casque - a hard helmet-like structure on the head or bill of certain birds and reptiles
- goosander - the common merganser, Mergus merganser, a large fish-eating diving duck of northern rivers and lakes
- fennec - A small fox of the species Vulpes zerda, found in the Sahara (excluding the coast) and having distinctive oversized ears.
- baa - to make the characteristic bleating sound of a sheep or goat
- tit - a small, active songbird that often feeds on insects and seeds
- alpaca - a domesticated South American camelid kept for its soft fleece
- basset - a basset hound, a short-legged dog with long ears and a strong sense of smell
- brach - Originally, a synonym of scent hound (“a hunting dog that tracks prey using its sense of smell rather than by its vision”); later, any female hound; a bitch hound.
- dunnock - A small European and Asian passerine bird, Prunella modularis; the hedge sparrow or hedge warbler.
- lapwing - Any of several medium-sized wading birds belonging to the subfamily Vanellinae, within family Charadriidae.
- throstle - Northern English: a song thrush
- weasel - a small slender carnivorous mammal of the genus Mustela or a related genus

### C2+
- fang - a long sharp tooth, as of a snake or dog
- badger - a burrowing nocturnal mammal; to pester or harass persistently
- barking - making a dog's sharp cry; British slang for mad or crazy
- beastly - like a beast; very unpleasant or disagreeable
- bovine - relating to cattle; sluggish or dull in manner
- hound - a hunting dog; also, to pursue or harass relentlessly
- pest - a destructive insect or animal, or an annoying person
- decoy - something used to lure or mislead, often a fake bird
- halter - a rope or strap for leading an animal; a noose for hanging
- brutish - savagely violent, coarse, or animal-like
- cub - the young of a bear, lion, or other carnivorous mammal
- mongrel - a dog or animal of mixed or indeterminate breed
- animalcule - a microscopic animal, such as an amoeba or other tiny organism
- animalivore - an animal that feeds on other animals; a carnivore
- arachnid - an eight-legged invertebrate such as a spider, scorpion, or mite
- barghest - a monstrous goblin-dog of northern English folklore, an omen of death
- bleat - to make the wavering cry of a sheep or goat; to complain feebly
- burdenous - burdensome; oppressive or heavy to bear
- burrow - an animal's underground hole; to dig or nestle into something
- carp - to complain or find fault persistently; a freshwater fish
- catlike - resembling a cat in stealth, grace, or agility
- doe - a female deer, rabbit, or hare
- elephantic - of or resembling an elephant; huge and ponderous
- feline - of or resembling a cat; catlike
- herbivore - an animal that feeds on plants
- howler - a glaring and ludicrous mistake; also an animal that howls
- leam - a leash for a hound, or to lead a dog by such a leash
- leonine - resembling or characteristic of a lion
- maw - the jaws or gullet of a voracious animal; a devouring opening
- ovine - of, relating to, or resembling sheep
- porkish - resembling pork or a pig; piggish
- ratter - a dog or other animal that hunts and kills rats
- redbreast - a bird with a red breast, especially the European robin
- reptile - a cold-blooded scaly vertebrate such as a snake, lizard, or crocodile
- rook - a black crow-like bird; a chess castle; to cheat or swindle
- sloth - habitual laziness; also a slow-moving tropical mammal
- talon - a sharp hooked claw, especially of a bird of prey
- tether - a rope or chain that ties an animal so it can graze only within a set range
- visitant - a visitor, especially a supernatural one or a migratory bird
- wether - a castrated male sheep
- bizcacha - Rare form of viscacha.
- lantern - An open structure of light material set upon a roof, to give light and air to the interior.
- looking-glass - Synonym of mirror (“smooth surface that reflects light so as to give an image of what is in front of it”).
- full-grown - Fully developed in a broader sense; complete, at one’s height.
- good-natured - having an easygoing and cheerful disposition
- spear - pierce with a spear
- jackal - an Old World nocturnal canine mammal closely related to the dog
- dun - of a dull greyish brown to brownish grey color
- spit - expel saliva, phlegm, or sputum from the mouth
- pierce - make a hole into
- walrus - A large Arctic marine mammal related to seals and having long tusks, tough, wrinkled skin, and four flippers, Odobenus rosmarus.
- well-to-do - Rich, prosperous, financially stable and comfortable.
- squalid - Extremely dirty and unpleasant.
- mast - The fruit of forest-trees (beech, oak, chestnut, pecan, etc.), especially if having fallen from the tree, used as fodder for pigs and other animals.
- seabeach - A beach lying along the sea.
- buffalo - any of several Old World animals resembling oxen including, e.g., water buffalo
- tuco-tuco - any of several stocky burrowing South American rodents of the genus Ctenomys
- birdcatcher - a person who catches or traps wild birds
- ocellated - marked with rounded, eye-shaped spots called ocelli
- varmint - a troublesome wild pest, especially around farms
- zoophagous - feeding on animals or animal matter; carnivorous
- cleg - a horsefly or gadfly, especially in northern British and Irish usage
- man-eater - an animal that has killed and eaten humans, especially a tiger, lion, crocodile, or shark
- dowp - the carrion crow, in northern English dialect
- blackbeetle - chiefly British: the Oriental cockroach, a large dark-brown or blackish cockroach
- nauplius - an early free-swimming crustacean larva with a median eye, little body segmentation, and usually three pairs of appendages
- tornaria - the transparent, free-swimming larva of an acorn worm or another enteropneust hemichordate
- lepidopteron - an insect of the order Lepidoptera, comprising butterflies, moths, and skippers
- staghound - a large, powerful hound formerly bred and used to hunt stags and other large game
- zoophagy - the feeding on animals or animal matter; carnivorous feeding
- bearlike - resembling a bear in appearance, movement, strength, or temperament
- mammiferous - historical zoology: mammalian; belonging to the class of animals whose females have mammary glands
- hindfoot - a rear foot of a four-legged animal, especially when contrasted with a forefoot
- chucao - the chucao tapaculo (Scelorchilus rubecula), a secretive, loud-calling forest bird with a reddish throat and breast, native to central and southern Chile and adjacent Argentina
- niata - an extinct breed of small South American cattle, formerly found in Argentina and Uruguay, distinguished by a very short, broad, upturned muzzle and projecting lower jaw
- tropilla - in Argentina and Uruguay, a group of riding horses kept together, traditionally trained to follow a bell mare
- surmullet - a red mullet or related goatfish, a brightly colored marine fish with sensory barbels beneath its chin
- aperea - a wild South American cavy of the species Cavia aperea, closely related to the domestic guinea pig
- coleoptera - beetles collectively; insects of the order Coleoptera, characterized by hardened forewings that protect the flight wings
- phorusrhacos - an extinct giant flightless predatory bird of the South American genus Phorusrhacos, known from Miocene fossils
- dimorphodon - an extinct long-tailed pterosaur of the genus Dimorphodon, known from the Early Jurassic period
- brown thrasher - a reddish-brown North American songbird (Toxostoma rufum) with a long tail, streaked underparts, and a varied song
- tu-whit tu-whoo - a conventional imitation of an owl's cry, especially the paired calls associated with tawny owls
- wood pewee - either of two small North American flycatchers of the genus Contopus, especially the eastern wood pewee (C. virens)
- hen harrier - a long-winged Eurasian bird of prey (Circus cyaneus) whose male is pale gray and whose female is brown; historically also a name for the closely related North American northern harrier
- fishhawk - an osprey, a large bird of prey that dives feet-first to catch fish
- toxodon - a large extinct herbivorous South American mammal of the genus Toxodon, a member of the hoofed-mammal order Notoungulata
- estivate - to spend a hot or dry period in a dormant or inactive state
- chewink - an eastern towhee, a large New World sparrow with reddish sides and, in the male, black upperparts
- carunculated - having one or more caruncles, especially fleshy growths on the head or neck of a bird
- cephalopodic - belonging to, characteristic of, or resembling a cephalopod
- homopterous - relating to the Homoptera, a former grouping of insects including cicadas, aphids, and scale insects
- landrail - the corncrake, a migratory Eurasian rail that lives mainly in meadows and fields
- stridulate - to make a shrill chirping, creaking, or grating sound by rubbing specialized body parts together
- peetweet - a North American name for the spotted sandpiper, derived from its call
- teru-tero - a South American lapwing with a conspicuous crest, a sharp alarm call, and a spur at the bend of each wing
- amadavat - a variant name for the red avadavat, a small South and Southeast Asian estrildid finch whose breeding male is red with white spots
- peludo - a hairy South American armadillo, especially the big hairy armadillo of Argentina and neighboring countries
- stercovorous - feeding on dung, especially as an insect or other small animal
- aculeate - zoology: having a stinger, especially belonging to the hymenopteran group Aculeata
- bee-eater - any brightly colored insect-eating bird of the family Meropidae, known for catching bees and wasps in flight
- mud turtle - any of several small freshwater turtles, especially of the genus Kinosternon, that live in muddy ponds, marshes, and slow streams
- annelidous - relating to or resembling annelids, the segmented worms that include earthworms and leeches
- motmot - a tropical American bird of the family Momotidae, usually green or blue-green and often having two long racket-tipped central tail feathers
- fishbelly - the underside or belly of a fish
- edental - having no teeth, or having very few teeth
- babirusa - a wild pig of the Indonesian genus Babyrousa, whose adult males have long upper canine teeth that curve upward through the snout
- water moccasin - a venomous semiaquatic pit viper of the southeastern United States, also called the cottonmouth
- necrophagous - feeding on dead or decaying animal matter
- titlark - an old or regional name for a pipit, especially the meadow pipit of Europe and western Asia
- culpeo - a large foxlike South American canid of the Andes and Patagonia, Lycalopex culpaeus
- vinchuca - a blood-feeding South American triatomine bug, especially Triatoma infestans, that may transmit the parasite causing Chagas disease
- plantain-eater - a fruit-eating African bird of the turaco family Musophagidae; now especially either of the grey plantain-eaters in the genus Crinifer
- chevrotain - a very small, hornless, deerlike ruminant of the family Tragulidae, native to tropical Africa or Asia; a mouse deer
- sandhopper - a small beach-dwelling amphipod crustacean, especially a talitrid, that moves by hopping
- entozoon - historical zoology: an animal parasite living inside another animal, especially an intestinal or tissue-dwelling worm
- foretarsus - the tarsus or distal foot segment of a foreleg, especially in an arthropod
- honeysucker - historical or regional: a sunbird, especially one of the nectar-feeding birds of Africa or southern Asia
- interoperculum - ichthyology: one of the bones in the opercular series of a bony fish, lying below the preopercle and between neighboring gill-cover bones
- nemertean - an unsegmented worm of the phylum Nemertea, typically marine and equipped with a long eversible proboscis; a ribbon worm
- nidify - formal or zoological: to build a nest or engage in nesting
- hoolock - any gibbon of the genus Hoolock, native to forests of northeastern India, Bangladesh, Myanmar, and nearby regions
- musk deer - a small tusked, antlerless Asian hoofed mammal of the family Moschidae, whose males have traditionally been hunted for a musk-producing gland
- sultan tit - a large Asian tit, Melanochlora sultanea, with glossy dark upperparts, yellow underparts, and a prominent crest
- ousel - a blackbird or related thrush, especially in older or regional usage
- devilfish - any of several large or striking marine animals, especially an octopus or manta ray
- Great Dane - a very large, tall domestic dog of a smooth-coated breed

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