Mammals

Panthera leo — apex predator of African savannas.

Panthera tigris — largest living cat species.

Panthera pardus — most widely distributed big cat.

Panthera onca — apex predator of the Americas.

Acinonyx jubatus — fastest land animal.

Canis lupus — pack-hunting ancestor of domestic dogs.

Vulpes vulpes — adaptable opportunistic omnivore.

Family Ursidae — eight living species.

Ailuropoda melanoleuca — bamboo-specialist bear.

Three species — the largest land mammals.

Genus Giraffa — tallest extant land animal.

Three African equid species.

Genus Gorilla — largest extant primate.

Pan troglodytes — one of humans' closest relatives.

Macropodidae — Australian marsupials.

Phascolarctos cinereus — arboreal marsupial.

Alces alces — the largest living deer.

Genus Lynx — tuft-eared forest wild cats.

Stocky burrowing mammals; mostly mustelids.

Castor — dam-building wetland engineers.

Subfamily Erinaceinae — small spiny insectivores.

Order Chiroptera — the only flying mammals.

Bos taurus — domesticated farm ruminant.

Capra hircus — agile domesticated browser.

Ovis aries — woolly domesticated grazer.

Sus domesticus — intelligent omnivorous livestock.

Ailurus fulgens — small bamboo-eating Himalayan mammal.

Slow-moving tree-dwelling mammals of the Americas.

Armoured digging mammals; nine-banded as a reference.

Quill-covered rodents (Old and New World groups).

Suricata suricatta — social mongoose of southern Africa.

Stocky burrowing Australian marsupials.

Ornithorhynchus anatinus — egg-laying Australian monotreme.

Primates of Madagascar; ring-tailed lemur as a reference.

Browsing mammals with a short prehensile snout.

Social carnivores; spotted hyena as a reference.

Hippopotamus amphibius — semi-aquatic African megaherbivore.

Family Rhinocerotidae — five horned species across Africa and Asia.

Genus Pongo — arboreal great apes of Borneo and Sumatra.

Bison bison — North America's largest land mammal.

Genus Camelus — desert-adapted dromedary and Bactrian camels.

Family Sciuridae — tree, ground, and flying squirrels.

Phacochoerus africanus — wild pig of African savannas.

Genus Connochaetes — migratory African antelopes (gnus).

Hydrochoerus hydrochaeris — the world's largest rodent.

Family Hylobatidae — small, agile apes of Asian forests.

Order Pholidota — scale-covered, ant-eating mammals.

Antilocapra americana — North America's fastest land mammal.

Okapia johnstoni — the giraffe's striped forest relative.

Sus scrofa — wild ancestor of the domestic pig.

Cervus canadensis — one of the largest deer.

Helarctos malayanus — the world's smallest bear.

Orycteropus afer — nocturnal African ant-eater.

Tachyglossidae — spiny, egg-laying monotreme.

Gulo gulo — the largest land mustelid.

Lynx rufus — adaptable North American wild cat.

Canis latrans — highly adaptable North American canid.

Family Herpestidae — agile carnivores of Africa and Asia.

Family Mephitidae — known for its defensive spray.

Genus Mustela — small, slender carnivores.

Martes martes — agile, tree-climbing woodland mustelid.

Family Talpidae — burrowing insectivores with spade-like paws.

Mustela erminea — bold little mustelid that turns white in winter.

Family Viverridae — cat-like nocturnal omnivores of Africa and Asia.

Genus Genetta — slender, spotted viverrids; agile climbers.

Arctictis binturong — shaggy "bearcat" with a prehensile tail.

Family Soricidae — tiny insectivores with a non-stop metabolism.

Sarcophilus harrisii — the largest carnivorous marsupial.

Genus Dasyurus — spotted marsupial carnivores of Australasia.

Myrmecobius fasciatus — a striped, day-active termite-eating marsupial.

Macrotis lagotis — a long-eared, burrowing desert marsupial.

Cryptoprocta ferox — Madagascar's largest carnivore.

Heterocephalus glaber — an underground, eusocial rodent.

Setonix brachyurus — the 'smiling' small wallaby of Rottnest Island.

Petaurus breviceps — a small gliding marsupial.

Order Peramelemorphia — pointy-snouted, digging marsupials.

Family Tenrecidae — Madagascar's hedgehog- and shrew-like mammals.

Order Dermoptera — the 'flying lemur', the best gliding mammal.

Daubentonia madagascariensis — a strange nocturnal Madagascan lemur.

Genus Propithecus — leaping lemurs that 'dance' across the ground.

Family Tarsiidae — tiny, huge-eyed carnivorous primates of SE Asia.

Genus Nycticebus — slow, big-eyed, venomous nocturnal primates.

Pedetes capensis — a hopping, kangaroo-like African rodent.

Mandrillus sphinx — the world's largest monkey, with a vivid face.

Family Callitrichidae — tiny gum-feeding New World monkeys.

Including the golden lion tamarin, a conservation icon.

Indri indri — the largest living lemur, famed for its songs.

Family Galagidae — wide-eyed, leaping nocturnal African primates.

Nasalis larvatus — Borneo's big-nosed, swimming leaf monkey.

Asian leaf monkeys (Colobinae); the gray langur as a reference.

Genus Pygathrix — vividly coloured 'costumed' leaf monkeys of Indochina.

Genus Cacajao — short-tailed Amazon monkeys with bright red faces.

Genus Pithecia — shaggy 'flying monkeys' of South America.

Genus Macaca — adaptable monkeys; the Japanese 'snow monkey' as a reference.

Striking black-and-white African leaf monkeys with a reduced thumb.

Genus Alouatta — among the loudest land animals.

Genus Ateles — long-limbed, prehensile-tailed canopy acrobats.

Genus Tamandua — tree-climbing 'lesser anteaters' of the Americas.

Genus Papio — large ground-dwelling monkeys with complex societies.

Genus Cercopithecus — colourful African forest monkeys.

Genus Lagothrix — thickset, woolly Amazon monkeys with a gripping tail.

Genus Brachyteles — the peaceful 'woolly spider monkey', the Americas' largest monkey.

Small South American monkeys famous for pair bonds and tail-twining.

Theropithecus gelada — Ethiopia's grass-grazing 'bleeding-heart' monkey.

Potos flavus — a golden, prehensile-tailed rainforest 'honey bear'.

Long-snouted, ring-tailed raccoon relatives that roam in sociable bands.

Caracal caracal — a tufted-eared wild cat that leaps to catch birds in flight.

Vulpes zerda — the world's smallest fox, a big-eared Sahara specialist.

Leptailurus serval — long-legged African cat that locates prey by sound and pounces high.

Leopardus wiedii — a small spotted cat with rotating ankles that climbs head-first.

Genus Bassaricyon — the kinkajou's slender cousin, but without a grasping tail.

Genus Aotus — the only nocturnal monkeys; big-eyed, with devoted fathers.

Neofelis nebulosa — a tree-climbing Asian cat with the longest canines for its size.

Leopardus pardalis — a chain-rosetted American wild cat once devastated by the fur trade.

Prionailurus viverrinus — an Asian wetland cat that swims and dives for fish.

Family Tayassuidae — pig-like New World herd mammals (not true pigs) with a musky back gland.

Genus Dasyprocta — long-legged rainforest rodents that plant the forest by burying seeds.

Proteles cristata — a small hyena-family insectivore that eats almost only termites.

Herpailurus yagouaroundi — a weasel-shaped American wild cat; a close relative of the puma.

Felis margarita — the only true desert cat, able to live with almost no drinking water.

Leopardus tigrinus — one of the smallest American cats; a little-known, vulnerable forest hunter.

Cuniculus paca — a large spotted rainforest rodent with sound-amplifying cheekbones.

Genus Babyrousa — the 'pig-deer' whose upper tusks curl up through the snout.

Cuon alpinus — the whistling Asiatic wild dog; an endangered, highly cooperative pack hunter.

Chrysocyon brachyurus — a long-legged South American 'fox on stilts' that eats lots of fruit.

Saiga tatarica — an Ice Age steppe antelope with a bulbous, trunk-like nose; recovering from near-extinction.

Capra falconeri — the largest wild goat, with magnificent corkscrew horns; Pakistan's national animal.

Litocranius walleri — the long-necked 'giraffe gazelle' that stands on its hind legs to browse.

Leopardus guigna — the smallest wild cat in the Americas; dark (melanistic) individuals are common.

Prionailurus planiceps — an endangered Southeast Asian wetland cat that hunts fish and frogs.

Speothos venaticus — a short-legged, otter-like South American canid that hunts in packs near water.

Ictonyx striatus — an African striped polecat that looks and smells like a skunk, but is a true mustelid.

Budorcas taxicolor — a massive Himalayan goat-antelope with a moose-like nose; Bhutan's national animal.

Genus Madoqua — a tiny African antelope with a cooling snout that lives in monogamous pairs.