Animals — Detailed list with origin, taxonomy, and more

This is the full animals index — 154 detailed animals, each with its own profile. Click any name to open the full entry.

For animals, every profile covers taxonomy, habitat, diet, range, lifespan, and conservation status.

All Animals

Aardvark

Orycteropus afer

A secretive nocturnal African mammal with a pig-like snout and long sticky tongue — the only living species in its entire order, an evolutionary singleton that has changed little in tens of millions of years.

Alligator

Alligator (genus, two species)

A large freshwater reptilian predator native to the southeastern United States and a small enclave in eastern China — distinct from crocodiles in habitat, snout shape, and temperament.

Alpaca

Vicugna pacos

A small South American camelid bred for fine wool — domesticated by Andean civilizations 6,000+ years ago, now a global niche livestock animal whose fleece rivals cashmere for softness.

Anteater

Myrmecophaga tridactyla (giant); Vermilingua suborder

A long-snouted, toothless mammal with a sticky tongue that flicks 150 times per minute — eating exclusively ants and termites, with the giant anteater of South America consuming up to 35,000 insects daily.

Antelope

Antilopinae and Bovidae (subfamilies; not a single species)

A diverse group of fast, lightweight horned ungulates spanning over 90 species across Africa, Asia, and the Americas — many of the world's fastest land mammals.

Armadillo

Dasypus novemcinctus

A small American mammal armored in bony plates, the only mammal that gives birth to identical quadruplets and one of the few wild carriers of leprosy.

Axolotl

Ambystoma mexicanum

The Mexican salamander that never grows up — an aquatic salamander that retains its larval features throughout adult life (a condition called neoteny), keeping its external gills as feathery plumes; it can regenerate entire limbs, spinal cord segments, and even parts of the heart and brain; critically endangered in the wild but kept by millions as a pet.

Aye-Aye

Daubentonia madagascariensis

The most unusual primate on Earth — a nocturnal Madagascan lemur that uses a highly elongated, skeletal middle finger to tap on tree bark, listen for hollow chambers containing grubs, then gnaw through and extract the larvae; it fills the ecological niche of woodpeckers on an island where woodpeckers do not exist.

Babirusa

Babyrousa babyrussa

The deer-pig of Sulawesi — one of the most anatomically bizarre pigs in the world, with upper canine tusks that grow upward through the skin of the snout and curve back toward the skull; males carry these extraordinary recurved tusks throughout life, and in older individuals the tusks can complete a full circle; a Vulnerable species of Indonesian rainforest.

Baboon

Papio spp.

A large, ground-dwelling Old World monkey with a distinctive dog-like muzzle, complex social hierarchies, and remarkable adaptability — found across sub-Saharan Africa and Arabia in five species.

Bat

Chiroptera (order)

The only flying mammal — over 1,400 species worldwide, ranging from bumble-bee-sized to flying foxes with 1.5 m wingspans, navigating by echolocation and crucial as pollinators and pest controllers.

Bear

Ursus arctos

A massive omnivorous mammal with the broadest range of any bear species, including the grizzly and Kodiak subspecies, capable of hibernating for half the year.

Beaver

Castor canadensis (North American)

A massive aquatic rodent — North America's largest rodent — that fundamentally reshapes landscapes through dam-building, creating wetlands that support biodiversity and modern landscape restoration efforts.

Binturong

Arctictis binturong

The "bearcat" of Southeast Asian forests — a shaggy, long-tailed civet relative that smells strongly of popcorn (from a chemical it produces to mark territory), uses its prehensile tail to hang from branches, and is one of the only mammals that can delay its own pregnancy through embryonic diapause.

Bison

Bison bison

A massive North American ungulate that once numbered 30-60 million on the Great Plains — nearly hunted to extinction by 1900, now recovered to roughly 500,000 across managed herds, ranches, and tribal lands.

Bobcat

Lynx rufus

A medium-sized wild cat native to North America — adaptable, secretive, and surprisingly common in suburbs and rural areas, with a stub tail giving the species its name.

Buffalo

Syncerus caffer (Cape); Bubalus bubalis (water); Bison bison (American "buffalo")

A general name for several large bovines — the African Cape buffalo (one of the most dangerous animals in Africa), the Asian water buffalo (essential to rice farming), and the American "buffalo" (actually a bison).

Camel

Camelus dromedarius (one hump); Camelus bactrianus (two humps)

A large hump-backed desert mammal capable of going days without water — central to desert civilizations from Arabia to the Sahara, with two hump-counts (one and two) representing distinct species.

Capuchin

Cebus capucinus

A highly intelligent New World monkey from Central and South America — famous for tool use, complex social behaviour, and being one of the most cognitively advanced non-ape primates.

Capybara

Hydrochoerus hydrochaeris

The world's largest living rodent — a semi-aquatic South American herbivore the size of a large dog, famous for its docile temperament and remarkable tendency to be adopted as a companion by nearly every other animal it meets.

Caracal

Caracal caracal

A sleek, medium-sized wild cat of Africa and Asia with extraordinary tufted black ears and the most impressive leaping ability of any cat its size — capable of batting down multiple birds from a flock simultaneously.

Cassowary

Casuarius casuarius (Southern cassowary)

The world's most dangerous bird — a large, flightless ratite of the New Guinea and Australian rainforest, armed with a dagger-like inner toe claw 12 cm long; females are larger than males and leave all parental duties to the father; the brilliant blue-and-red neck wattles serve as status signals.

Chameleon

Chamaeleo chamaeleon (European chameleon); Furcifer pardalis (panther chameleon) and others

The famous colour-changing lizard — chameleons change colour not primarily for camouflage but to communicate mood, temperature regulation, and social status; they have independently rotating eyes that provide 360-degree vision, a tongue that launches at 13 km/h to catch insects, and feet designed like tongs for gripping branches.

Cheetah

Acinonyx jubatus

The fastest land animal, a slender African cat built for short bursts of extreme speed but vulnerable to larger predators and habitat loss.

Chimpanzee

Pan troglodytes

Humanity's closest living relative — sharing 98.7% of our DNA — a great ape of African forests with sophisticated tool use, complex social politics, and documented warfare between communities.

Clouded Leopard

Neofelis nebulosa

A secretive mid-sized cat of Southeast Asian forests with extraordinarily large canine teeth relative to its skull and the ability to descend trees headfirst — its cloud-like coat pattern gives it its name.

Coati

Nasua nasua

A long-snouted, ringed-tail member of the raccoon family from Central and South America — highly social in females, solitary in males, and remarkably intelligent foragers.

Colobus Monkey

Colobus guereza (black-and-white colobus)

The striking leaf-eating monkey of African forest — the black-and-white colobus is one of Africa's most visually dramatic primates, with jet-black fur contrasting with white facial frame, a long white mantle over the shoulders, and a white-tipped tail; colobus monkeys eat mainly mature leaves that other primates avoid, relying on a specialised sacculated stomach to ferment and detoxify the leaf material.

Cow

Bos taurus

The world's most numerous large domesticated mammal — bred for milk, meat, leather, and labor across nearly every continent for over 10,000 years.

Coyote

Canis latrans

A medium-sized wild canid that has thrived as humans have transformed North America — expanding from prairie origins to colonize all 49 mainland US states, suburbs, and major cities.

Crocodile

Crocodylus (genus, multiple species)

A large semi-aquatic reptilian predator that has changed remarkably little in 200 million years — the world's most powerful biting jaw and an apex predator of tropical rivers and estuaries.

Deer

Odocoileus virginianus (white-tailed); Cervidae family

Slender, antlered ruminants found across nearly all continents — from the white-tailed deer of North America to the European red deer to tropical muntjacs — among the most successful large mammals in human-altered landscapes.

Dhole

Cuon alpinus

Asia's wild dog — a highly social, pack-hunting canid of South and Southeast Asian forests that kills prey far larger than itself through cooperative strategy; dholes can drive tigers and leopards from their kills, communicate with extraordinary calls including whistles and clucks, and their packs may number over 30 individuals.

Dik-dik

Madoqua kirkii (and related species)

The tiny antelope of African thornbush — one of the world's smallest antelopes, barely 35–45 cm at the shoulder, with enormous dark eyes, an elongated flexible snout, and a habit of zigzagging away in a characteristic stop-start dash when alarmed; dik-diks form lifelong monogamous pairs that maintain small territories together, marking boundaries with secretions from preorbital glands beside their eyes.

Dingo

Canis lupus dingo

Australia's wild dog — a lean, amber-coated canid that arrived from Asia at least 3,500 years ago and now sits at the top of the mainland food chain as the continent's largest terrestrial predator.

Dolphin

Tursiops truncatus

A highly intelligent marine mammal found in oceans worldwide, famous for its sophisticated social behavior, problem-solving ability, and signature whistle communication.

Donkey

Equus africanus asinus

A patient, sure-footed working equid descended from the African wild ass — the world's primary cargo animal in mountainous and arid regions for over 5,000 years.

Eagle

Aquila chrysaetos (golden); Haliaeetus leucocephalus (bald — see Birds entry)

A general name for the largest birds of prey in the family Accipitridae — including the bald, golden, harpy, and Philippine eagles — apex predators with extraordinary vision and as many cultural symbolic meanings as cultures themselves.

Echidna

Tachyglossus aculeatus

A spiny egg-laying mammal of Australia and New Guinea — one of only five surviving monotremes — that uses an electroreceptive snout to locate buried ants, termites, and earthworms without using sight or smell.

Elephant

Loxodonta africana

The largest living land animal, recognizable by its long trunk and tusks, and remarkable for its complex social structures and matriarchal herds.

Elephant Seal

Mirounga angustirostris (northern); Mirounga leonina (southern)

A massive marine mammal with males weighing 4 tons and sporting an inflatable trunk-like proboscis — one of the deepest-diving mammals on Earth, capable of submerging to 1,500 m for two-hour dives.

Elk

Cervus canadensis

A large deer of North America and East Asia — second only to moose among living deer in size, with massive antlers grown anew every year by males.

Fennec Fox

Vulpes zerda

The world's smallest fox — weighing just 1–2 kg, with disproportionately enormous ears that serve as radiators in the Sahara heat and as precision directional hearing for locating prey underground.

Ferret

Mustela putorius furo

A domesticated polecat used for centuries to hunt rabbits — popular as a curious, energetic pet, with strong predatory instincts and a reputation for both companionship and mischief.

Fossa

Cryptoprocta ferox

Madagascar's apex predator — a cat-like carnivore related to mongooses that can climb trees with equal agility going up or down, hunts lemurs by leaping through the forest canopy, and is the largest carnivore native to Madagascar; despite resembling a cat, it is more closely related to civets.

Fox

Vulpes vulpes

The most widespread wild canid on Earth, an adaptable omnivore with a luxurious red coat, white-tipped tail, and a notorious reputation for cleverness.

Frog

Anura (order)

A diverse order of tailless amphibians — over 7,000 species worldwide, ranging from microscopic to football-sized, with skin that breathes, tongues that snap, and an outsized role in ecological monitoring.

Galago

Galago senegalensis (and related species)

The bush baby of African nights — small, doe-eyed primates with enormous forward-facing eyes for night vision, vast membranous ears that fold flat when resting, and extraordinary leaping ability; galagos can jump up to 2.25 metres in a single spring using powerful back legs; their plaintive cry in the African night sounds disconcertingly like a crying human infant, giving rise to the name bush baby.

Gazelle

Gazella (genus)

A swift, slender African and Asian antelope — about a dozen species ranging across savannas, deserts, and open grasslands, prized prey for cheetahs and lions, and a model of running efficiency.

Gelada

Theropithecus gelada

Ethiopia's grass-eating monkey — the only primate that feeds primarily on grass, living in the high Simien Mountains in bands of hundreds that graze like sheep; males have a dramatic hourglass-shaped bare red chest patch that flushes brighter during excitement and serves as a substitute for the rump displays used by other primates.

Gerenuk

Litocranius walleri

The giraffe gazelle of East African thornbush — the gerenuk has an extraordinarily long neck and legs that allow it to stand bipedally on its hind legs to browse up to 2 metres high in acacia bushes; the only antelope that routinely stands on its hind legs to feed; a Somali name meaning giraffe-necked describes it precisely; unlike most antelopes, it never drinks water, obtaining all moisture from browse.

Gibbon

Hylobatidae (family)

A small, tail-less Asian ape that swings through forest canopies with extraordinary grace — the smallest of the apes, monogamous, and famous for elaborate songs that echo through Southeast Asian rainforests at dawn.

Giraffe

Giraffa camelopardalis

The tallest living land animal, with an extraordinarily long neck and legs and a patchwork coat unique to each individual.

Goat

Capra hircus

A small horned ruminant domesticated alongside sheep at the dawn of agriculture — kept globally for milk, meat, fiber, and as remarkable browsers in difficult terrain.

Gorilla

Gorilla beringei (eastern); Gorilla gorilla (western)

The largest living primate — gentle vegetarian forest dwellers of Central Africa, organized in family groups led by silverback males, with tragic conservation crises across all four subspecies.

Hare

Lepus (genus)

A larger, faster cousin of the rabbit — distinguished by long legs, larger ears, solitary habits, and the dramatic spring boxing matches between competing males.

Hedgehog

Erinaceus europaeus (European hedgehog)

A small spiky insectivore beloved across Europe and Asia — covered in 5,000+ defensive spines, capable of curling into an impenetrable ball, and increasingly endangered by habitat loss in the UK.

Hippopotamus

Hippopotamus amphibius

A massive, semiaquatic African mammal — the third-largest land animal after elephants and rhinos, with surprisingly close evolutionary ties to whales and a reputation as one of Africa's most dangerous animals.

Horse

Equus ferus caballus

A large hoofed mammal domesticated 5,500 years ago on the Eurasian steppe — central to human history as transport, agriculture, warfare, and sport, with hundreds of breeds adapted to specific tasks.

Hyena

Crocuta crocuta (spotted); Hyaena hyaena (striped); Hyaenidae family

A powerful African scavenger and predator with the strongest bite force of any mammal — capable of crushing bones, organized in matriarchal clans of up to 80 individuals, and far more an active hunter than the scavenger reputation suggests.

Ibex

Capra ibex

A wild mountain goat with massive curved horns that lives on near-vertical cliff faces in the European Alps, recovered from near-extinction through 19th-century conservation.

Iguana

Iguana iguana

A large, tree-dwelling Central American lizard with a row of dorsal spines and a long tail, herbivorous despite its dragon-like appearance, popular as both pet and (in some regions) food.

Jackal

Canis aureus

A medium-sized canid of Africa and Asia — a highly adaptable scavenger and hunter that forms monogamous lifetime pairs and cooperatively raises young, serving an essential ecological role as a cleanup crew.

Jaguar

Panthera onca

The largest cat in the Americas and the third-largest in the world, a powerfully built ambush predator with the strongest pound-for-pound bite force of any big cat.

Jellyfish

Scyphozoa, Cubozoa, Hydrozoa, Staurozoa (classes)

A diverse group of marine cnidarians with translucent bodies and stinging tentacles — among Earth's oldest animals, with body plans essentially unchanged for 500+ million years and increasingly abundant in warming oceans.

Kangaroo

Osphranter rufus

The largest living marsupial and Australia's emblematic animal, a powerful hopper that can clear 9 m in a single leap and travel 70 km/h across arid plains.

Kinkajou

Potos flavus

A golden, nocturnal rainforest mammal related to raccoons — it has a prehensile tail for gripping branches, an extraordinarily long tongue for extracting flower nectar (making it an important pollinator), and large dark eyes adapted for night vision; it sleeps in hollow trees by day and is one of the few carnivores that has adopted a largely frugivorous and nectarivorous diet.

Koala

Phascolarctos cinereus

A slow, eucalyptus-eating Australian marsupial with thick fur and a specialized digestive system, often called a "bear" but unrelated to true bears.

Komodo Dragon

Varanus komodoensis

The world's largest living lizard — a monitor lizard of the Indonesian islands that can reach 3 metres and 70 kg, kills large prey including deer and water buffalo with venom-laced saliva and a bacteria-laden bite, and can reproduce by parthenogenesis; its ancient lineage and isolated island habitat make it genuinely prehistoric in character.

Lemur

Lemuriformes (infraorder)

A primate family endemic to Madagascar — over 100 species evolved in isolation for 60+ million years, ranging from the tiny mouse lemur to the dramatic ringtailed lemur, all critically threatened by deforestation.

Leopard

Panthera pardus

The most adaptable big cat — found from African savannas to Russian taiga to urban Mumbai — with rosette-spotted fur, a powerful bite, and remarkable ability to haul prey twice its weight up trees.

Lion

Panthera leo

A large social cat and the only big cat that lives in groups, the lioness does most of the hunting while the maned male defends territory and pride.

Llama

Lama glama

A South American camelid domesticated for cargo, wool, and meat by Andean civilizations — sure-footed at extreme altitudes, with a tendency to spit at threats and a deep cultural place in Inca religion.

Lobster

Homarus americanus (American); Homarus gammarus (European)

A large marine crustacean — once a poor person's food in colonial New England, now an iconic luxury seafood and the foundation of major Maritime fisheries on both sides of the North Atlantic.

Lynx

Lynx (genus)

A large, snow-adapted wild cat with characteristic ear tufts and short tail — four species spread across the northern hemisphere, with populations recovering from near-extinction in some regions.

Manatee

Trichechus (genus)

A massive, slow-moving aquatic herbivore — the "sea cow" of warm coastal waters — vegetarian, gentle, and inexplicably evolutionary close relatives of elephants.

Mandrill

Mandrillus sphinx

The world's largest monkey and the most colourful mammal — males develop electric blue and red facial colouring and a brilliantly coloured rump; despite their fearsome appearance, mandrills are omnivorous and live in enormous groups called hordes.

Maned Wolf

Chrysocyon brachyurus

The giraffe-legged wolf of South American grasslands — an unmistakable canid with improbably long legs, reddish-orange fur, a black mane, and large ears; the maned wolf is not closely related to wolves or foxes, being the sole member of its genus; it is an omnivore that eats more fruit than meat, and the wolf-apple (lobeira fruit) forms a large part of its diet.

Mara

Dolichotis patagonum

The Patagonian mara looks exactly like a small deer but is actually a giant guinea pig — a large South American rodent that runs on the tips of its hoofed toes, mates for life, and lives in colonial warrens where multiple pairs deposit their young in a communal den while taking turns guarding.

Markhor

Capra falconeri

The national animal of Pakistan — a large wild goat of the Himalayas and Hindu Kush with spectacular spiral horns that in old males can reach 160 cm; the horns spiral outward in a tight corkscrew, unique among wild goats; the markhor lives on vertiginous cliff faces inaccessible to most predators and is revered in the region — its Farsi name means "snake eater," though it does not actually eat snakes.

Meerkat

Suricata suricatta

A small social mongoose of southern African deserts — famous for upright sentinel posture, tightly cooperative family groups, and starring roles in nature documentaries and "The Lion King."

Mole

Talpidae (family)

A small underground mammal with paddle-like front feet for digging — found across most of the northern hemisphere, dug-into-the-ground specialists with extraordinarily refined sense of touch and a near-permanent underground existence.

Mongoose

Herpestidae (family)

A diverse African and Asian mammal family famous for snake-fighting prowess — about 35 species ranging from solitary forest dwellers to highly social pack animals like meerkats.

Monkey

Cebus capucinus (white-faced) and several related species

A small, intelligent New World monkey famous for its tool use and dexterity, named after the brown-and-white robes of Capuchin friars and the most studied genus of monkey in cognitive research.

Moose

Alces alces

The largest living deer species — North American and Eurasian, browsing on aquatic plants and tree bark, capable of being unexpectedly aggressive and outweighing most cars they collide with.

Mouse

Mus musculus (house mouse)

One of the most successful mammals on Earth — house mice have followed humans worldwide, while wild mice species number in the dozens, serving as both pest, prey, and the most-used laboratory animal in modern biology.

Musk Ox

Ovibos moschatus

A massive Ice Age survivor of the Arctic tundra — famous for the defensive circle it forms against wolves, its extraordinarily warm qiviut wool, and the musky odour males produce during rut.

Mussel

Mytilus (genus, marine); Unionidae (freshwater)

A bivalve mollusk attached to rocks and ropes by tough byssal threads — an ecologically critical filter feeder, a major sustainable seafood, and an emerging water quality indicator.

Narwhal

Monodon monoceros

An Arctic whale with a single long spiraled tusk — actually a tooth — that gives it the popular name "unicorn of the sea," found only in the high Arctic.

Nilgai

Boselaphus tragocamelus

The largest Asian antelope — the nilgai (or blue bull) is a horse-sized bovid with a distinctively horse-like gait and a sloping back; males are slate-blue with a white patch on the throat, white ear spots, and short conical horns; females are tawny-brown and hornless; the nilgai is the most common large wild mammal of the Indian plains, coexisting with agriculture and often raiding crops.

Numbat

Myrmecobius fasciatus

A small, striped Australian marsupial that eats nothing but termites — one of Australia's most striking and critically endangered mammals, with a sticky tongue that can flick 100 times per minute.

Octopus

Octopoda (order — many species)

An eight-limbed marine cephalopod with three hearts, blue blood, and an extraordinary intelligence — capable of solving puzzles, using tools, and changing color across its entire body in milliseconds despite being colorblind.

Okapi

Okapia johnstoni

A secretive forest giraffe of the Congo Basin — the only living relative of the giraffe, despite looking more like a striped horse, and completely unknown to Western science until 1901.

Onager

Equus hemionus

The wild ass of Asia — a fast, slender-legged equid midway between a horse and a donkey, the onager is built for speed across open desert steppe; in short sprints it can reach 70 km/h, making it one of the fastest land animals; populations have been severely reduced by hunting and habitat loss across most of their historical range; the Indian wild ass subspecies survives mainly in the Little Rann of Kutch.

Opossum

Didelphis virginiana

North America's only marsupial — a Virginia-opossum surviving and thriving across most of the continent, with a prehensile tail, 50 teeth, and the famous "playing dead" defense.

Orangutan

Pongo pygmaeus (Bornean); P. abelii (Sumatran); P. tapanuliensis (Tapanuli)

A large reddish-orange great ape of Southeast Asian rainforests — the only great ape outside Africa, exclusively arboreal, with deep cognitive abilities and a critical conservation crisis.

Otter

Enhydra lutris

A marine mustelid that floats on its back and uses stones as tools to crack shellfish, with the densest fur of any mammal and a key role in kelp-forest ecology.

Panda

Ailuropoda melanoleuca

A black-and-white bear that subsists almost entirely on bamboo despite a carnivore's digestive system, and the international symbol of wildlife conservation.

Pangolin

Manis spp. / Phataginus spp. / Smutsia spp.

A scaly nocturnal mammal that looks like an animated artichoke — the world's most heavily trafficked wild mammal, with all eight species under severe poaching pressure for traditional medicine markets.

100

Pig

Sus scrofa domesticus

A highly intelligent omnivorous mammal domesticated independently in Asia and Europe — one of the world's most-eaten meats and a working model for human medicine.

101

Pika

Ochotona princeps (American pika) and related species

A small, round-eared relative of rabbits that lives on rocky mountain slopes and alpine meadows — unlike its rabbit relatives, it does not hibernate but instead spends summer frantically collecting and drying grasses and wildflowers into hay piles for winter; its distinctive high-pitched call echoes across talus slopes.

102

Pine Marten

Martes martes

A cat-sized mustelid of British and European forests — agile enough to chase squirrels through the tree canopy, the pine marten is one of Britain's rarest mammals; reintroduced to Wales and southern England, it is playing an unexpected role in reducing invasive grey squirrel populations, which flee the marten while native red squirrels learn to tolerate it.

103

Platypus

Ornithorhynchus anatinus

An egg-laying, beaver-tailed, duck-billed, otter-furred Australian mammal — among the oddest animals on Earth, with venomous spurs, electroreception, and one of evolution's most surprising survivors.

104

Porcupine

Erethizon dorsatum (North American); Hystrix cristata (African)

A medium-large rodent armed with up to 30,000 barbed quills — solitary, slow-moving, and surprisingly difficult to predate due to a defense that has stopped lions, leopards, and pumas.

105

Proboscis Monkey

Nasalis larvatus

The monkey with the most extraordinary nose in the animal kingdom — the male's enormous, pendulous nose can grow longer than 10 cm, acts as a resonating chamber to amplify calls, and appears to be a signal of genetic fitness to females; found only in the rainforests and mangroves of Borneo.

106

Puma

Puma concolor

The Americas' most widely distributed large cat — known also as cougar, mountain lion, and panther — a powerful, adaptable solitary hunter that ranges from the Canadian Yukon to Patagonia.

107

Quetzal

Pharomachrus mocinno

Central America's most spectacular bird — the resplendent quetzal's emerald green tail feathers can reach 65 cm and were considered more valuable than gold by the Maya and Aztec civilisations; it is the national bird of Guatemala, depicted on the flag and currency, and remains a symbol of freedom as it refuses to survive long in captivity.

108

Quokka

Setonix brachyurus

A small, herbivorous Australian marsupial nicknamed the "world's happiest animal" for its perpetually grinning face, found only on Rottnest Island and in small mainland populations.

109

Quoll

Dasyurus maculatus

A spotted carnivorous marsupial from Australia and New Guinea — a fierce predator relative to its size, critically threatened by foxes, cats, and cane toads, and one of Australia's most important native predators.

110

Rabbit

Oryctolagus cuniculus (European)

A small social mammal that lives in burrows in groups of dozens — domesticated for fur, meat, and pets, with European rabbits as the iconic species but dozens of distinct rabbit species worldwide.

111

Raccoon

Procyon lotor

A masked, dexterous-pawed nocturnal mammal of North American forests and cities — exceptionally intelligent, omnivorous, and notorious for cracking open garbage cans and pet food containers.

112

Red Panda

Ailurus fulgens

A cinnamon-red tree-dwelling mammal of the Himalayas and Chinese mountains — not closely related to the giant panda despite sharing its bamboo diet, it was discovered by European science 50 years before the giant panda and may have given pandas their name; it eats bamboo with the same false thumb (enlarged wrist bone) evolved independently in both species.

113

Reindeer

Rangifer tarandus

The only deer species in which both males and females grow antlers — domesticated for thousands of years by Arctic peoples for meat, milk, hide, and transport; famous in Western culture as Santa Claus's sleigh-pullers, based on real Sámi traditions of reindeer herding.

114

Rhinoceros

Ceratotherium simum

The second-largest land animal after the elephant, a massive grazing rhino with a square mouth and two horns, recovered from the brink of extinction but still poached for those horns.

115

Saiga

Saiga tatarica

A bizarre-looking antelope with an oversized, bulbous nose that filters dust and warms cold air on the Central Asian steppe; one of the most ancient living mammals, surviving alongside woolly mammoths, and now critically endangered after a catastrophic 2015 die-off killed 200,000 animals in three weeks.

116

Salamander

Caudata (order)

A diverse order of amphibians with elongated bodies and tails — about 700 species worldwide, capable of regenerating limbs, organs, and even portions of the brain.

117

Sand Cat

Felis margarita

The smallest wild cat of the deserts — a compact, sandy-coloured cat with enormous ears, densely furred paws, and adaptations for life in extreme heat and cold; sand cats can survive without drinking water for months, obtaining all moisture from their prey, and can dig rapidly into sand to escape heat or pursue prey; deceptively cute in appearance but a formidable desert predator.

118

Sea Lion

Zalophus californianus (California); Otariidae family

An eared seal — distinguishable from true seals by external ear flaps and front-flipper-driven swimming — with vocal "barking" colonies on rocky coasts and a long history of training for circuses, naval programs, and aquariums.

119

Seal

Phoca vitulina (harbor seal); also Phocidae family broadly

A semiaquatic marine mammal with streamlined body and flippers — the harbor seal of temperate coasts, with vocal "songs" of underwater communication, and life cycles split between sea hunting and land breeding.

120

Serval

Leptailurus serval

Africa's most successful small wild cat — a tall, long-legged cat with enormous ears and a spotted coat, capable of leaping 3 metres into the air to bat down birds in flight; it has the highest hunting success rate of any wild cat, catching prey on more than half of all attempts.

121

Shark

Selachimorpha (subclass — over 500 species)

An ancient cartilaginous fish that has roamed the oceans for over 400 million years — predating dinosaurs by hundreds of millions of years — with over 500 living species ranging from the 18 cm dwarf lanternshark to the 18 m whale shark.

122

Sheep

Ovis aries

A small ruminant raised for wool, meat, milk, and leather — among the earliest domesticated animals, with over a billion sheep alive worldwide today.

123

Siamang

Symphalangus syndactylus

The largest of the gibbons — a black, shaggy ape of the Malay Peninsula and Sumatra that produces one of the loudest calls of any land animal using an inflatable throat sac the size of a grapefruit; pairs bond for life and sing coordinated duets that carry through rainforest for kilometres.

124

Skunk

Mephitis mephitis (striped skunk)

A black-and-white mammal famous for its sulfurous defensive spray — capable of accurate spraying up to 3 meters, with a smell so persistent it can linger for days even after washing.

125

Sloth

Bradypus variegatus (brown-throated sloth)

A slow-moving, tree-hanging mammal native to Central and South American rainforests, so sluggish that algae grows on its fur — providing camouflage and a small ecosystem.

126

Sloth Bear

Melursus ursinus

A shaggy, long-snouted bear of the Indian subcontinent — specialised as a termite and ant eater, with long curved claws for tearing open mounds, a mobile lower lip and long tongue for extracting insects, and the ability to close its nostrils to keep out dust; the sloth bear's noisy sucking sounds as it vacuums up termites can be heard from 100 metres away.

127

Snake

Serpentes (suborder)

A legless reptile of nearly every habitat on Earth — over 3,800 species ranging from the 10 cm thread snake to the 6 m anaconda, with sophisticated venom systems and an extraordinary ability to swallow prey larger than their heads.

128

Snow Leopard

Panthera uncia

The ghost of the mountains — a large cat of the high Himalayas and Central Asian ranges, rarely seen by humans; it has the longest tail relative to body size of any cat, which it wraps around itself like a scarf for warmth, and is known for its haunting, otherworldly call that sounds nothing like a roar.

129

Springbok

Antidorcas marsupialis

South Africa's national animal and emblem — a graceful medium-sized antelope of the Karoo and Kalahari known for its spectacular "pronking" display, in which it springs repeatedly into the air with arched back and stiff legs; once migrated in herds of millions across southern Africa.

130

Squirrel

Sciurus carolinensis (Eastern grey); Sciurus vulgaris (Eurasian red); many species

A small bushy-tailed rodent of trees and parks — among the most successful suburban-adapted mammals, with hoarding behavior that accidentally plants countless trees each year.

131

Starfish

Asteroidea (class)

A radially symmetric marine invertebrate (more correctly called a sea star) with hundreds of tube feet, the ability to regenerate lost arms, and a unique digestive system that turns inside-out to feed.

132

Stoat

Mustela erminea

A small, fierce mustelid — an elongated, chestnut-brown predator with a cream underside and a black-tipped tail; stoats are specialist rabbit hunters, able to pursue prey much larger than themselves, and can send entire rabbit warrens into paralysed panic; in northern Britain and at altitude, they turn pure white (ermine) in winter, retaining only the black tail-tip.

133

Sun Bear

Helarctos malayanus

The world's smallest bear — a tree-climbing, honey-obsessed omnivore from Southeast Asia with an extraordinarily long tongue, a chest patch shaped like a rising sun, and an unexpectedly expressive face.

134

Takin

Budorcas taxicolor

The ungainly giant of Himalayan forest — the takin looks improbable, like a goat that has been assembled from spare parts; it has the massive body of a musk ox, the Roman nose of a wildebeest, a short tail, and a yellow-gold coat; it is the national animal of Bhutan, where it is closely associated with the Divine Madman's legend; one of the larger bovids of Asia and a herd animal of dense rhododendron and bamboo forest.

135

Tapir

Tapirus spp.

A large, prehistoric-looking mammal from South America and Southeast Asia with a short prehensile trunk — one of the oldest surviving large-mammal body plans on Earth, more closely related to horses and rhinos than to pigs.

136

Tarsier

Tarsius spectrum and related Tarsius species

The primate with the largest eyes relative to body size of any mammal — a tiny nocturnal primate of Southeast Asian forests whose enormous, fixed eyes cannot move in their sockets (the animal must rotate its entire head to change direction of gaze); each eye is as large as its brain; it is the only entirely carnivorous primate, eating insects, lizards, and small birds.

137

Tasmanian Devil

Sarcophilus harrisii

The world's largest carnivorous marsupial — a stocky, jet-black scavenger and hunter from Tasmania, famous for its bone-crushing bite, spine-chilling screams, and its battle against a contagious facial tumour disease.

138

Tiger

Panthera tigris

The largest cat species, an apex predator with distinctive orange-and-black stripes, native to Asian forests, grasslands, and mangroves.

139

Tree Kangaroo

Dendrolagus species

A kangaroo that climbs trees — tree kangaroos are macropods that returned to an arboreal life from terrestrial ancestors, re-evolving the short, curved claws, flexible forelimbs, and long counterbalancing tail needed for life in the forest canopy; they are slow and clumsy on the ground but agile in trees, able to leap between branches and drop 18 metres to the forest floor without injury.

140

Turtle

Testudines (order)

An ancient reptile order with a protective bony shell — over 350 species ranging from tiny musk turtles to massive sea turtles, with some species living over 150 years.

141

Uakari

Cacajao calvus

A South American monkey with a strikingly bare red face — health visible at a glance — that lives in flooded Amazonian forests and is among the most threatened primates in the Americas.

142

Vicuña

Vicugna vicugna

A wild South American camelid living high in the Andes, prized for its fine and exceptionally rare wool — once almost driven to extinction, now recovered through aggressive conservation.

143

Wallaby

Macropus and Wallabia genera

A small to medium kangaroo relative — there's no clear biological distinction between kangaroo and wallaby; "wallaby" generally means smaller species — found across Australia, New Guinea, and as introduced populations in New Zealand, Britain, and Hawaii.

144

Walrus

Odobenus rosmarus

A massive Arctic marine mammal with iconic tusks — pinniped giant of the polar seas, weighing up to 2 tons, equipped with sensory whiskers that find clams in dark seabed mud.

145

Weasel

Mustela (genus, multiple species)

A small, slender, and ferociously efficient carnivore — capable of killing prey larger than itself, with seasonal coat color changes from brown to white in cold climates, distributed across most of the Northern Hemisphere.

146

Whale

Cetacea (infraorder); Balaenoptera musculus (blue whale, largest)

The largest animals ever to live on Earth — ocean-dwelling mammals descended from hoofed land ancestors, with the blue whale's heart the size of a small car and the sperm whale's brain the largest ever.

147

Wild Boar

Sus scrofa

The ancestor of the domestic pig — a powerfully built, tusked omnivore with coarse grey-black bristles that has recolonised much of Europe and Asia; a major game animal, agricultural pest, and ecological engineer whose rooting transforms forest floors.

148

Wildebeest

Connochaetes taurinus

A large African bovid famous for the greatest wildlife spectacle on Earth — the annual Serengeti migration, in which over 1.5 million wildebeest cross crocodile-filled rivers in a coordinated mass movement.

149

Wolf

Canis lupus

The largest wild canid, a deeply social pack-hunter with the broadest historical range of any wild mammal except humans, and ancestor to the domestic dog.

150

Wolverine

Gulo gulo

The largest terrestrial member of the weasel family — a stocky, ferocious scavenger of northern forests and tundra with disproportionate strength, known to drive wolves and cougars off kills many times its own size.

151

Wombat

Vombatus ursinus

A stocky, burrowing Australian marsupial famous for producing cube-shaped feces — the only animal in the world known to do so — and a backward-facing pouch that keeps soil out while digging.

152

Xerus

Xerus inauris (Cape ground squirrel)

An African ground squirrel of arid scrub and semi-deserts, with sandy or grayish fur, a long bushy tail, and a habit of using the tail as a parasol against the sun.

153

Yak

Bos grunniens (domestic) / Bos mutus (wild)

A massive long-haired bovine of the high Himalayas, central to Tibetan and Mongolian life as a beast of burden, milk producer, and source of meat, fiber, and butter for tea.

154

Zebra

Equus quagga

The most common and widespread zebra species, a grazing horse with vivid black-and-white striping that lives in family bands across the African savanna.

About this animals index

That's our current full list of animals. We add new entries every week — if there's a animal you'd like us to cover, let us know and we'll write it up.

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