American bullfrog
Lithobates catesbeianus
The American bullfrog is North America's largest true frog, up to 20 cm long and 500 g. Its size, deep call, diet, tadpoles, range and spread as an invasive.
Region · 124 species
Animals of Asia, from tigers, pandas and orangutans to Komodo dragons, snow leopards and king cobras.
Lithobates catesbeianus
The American bullfrog is North America's largest true frog, up to 20 cm long and 500 g. Its size, deep call, diet, tadpoles, range and spread as an invasive.
Vulpes lagopus
The Arctic fox is a small fox of the Arctic tundra with some of the warmest fur of any mammal. Facts on its size, color morphs, range, diet, cubs and lifespan.
Sterna paradisaea
The Arctic tern is a small gray-and-white seabird that flies from the Arctic to Antarctica and back each year. Facts on its size, diet, colonies and lifespan.
Elephas maximus
The Asian elephant is Asia's largest land animal, smaller-eared than African elephants and Endangered. Facts on its size, tusks, diet, herds, range and threats.
Callinectes sapidus
The Atlantic blue crab is a swimming crab of Chesapeake Bay and the Gulf of Mexico, with blue claws and paddle legs. Its size, diet, molting and life cycle.
Attacus atlas
The Atlas moth is a giant silk moth of Asian forests with a wingspan of about 25 cm. Its snake-head wingtips, mouthless adults, huge caterpillars and silk.
Chironex fleckeri
The Australian box jellyfish is a cube-shaped, fast-swimming jellyfish of northern Australia with 60 tentacles, 24 eyes and a sting that can kill in minutes.
Camelus bactrianus
The Bactrian camel is the two-humped camel of Central Asia, built for cold deserts. Its size, humps, winter coat, diet, lifespan and its rare wild relative.
Hirundo rustica
The barn swallow is the world's most widespread swallow: a fork-tailed insect hunter that nests in barns and migrates between continents. Size, diet, lifespan.
Delphinapterus leucas
The beluga is a white Arctic whale with a bulging melon, a bendy neck and a huge range of calls. Its size, color change, diet, range, lifespan and threats.
Pongo pygmaeus
The Bornean orangutan is a Critically Endangered great ape found only on Borneo. Facts on its size, cheek pads, fruit diet, nightly nests, babies and threats.
Ursus arctos
The brown bear is the most widespread bear, found across North America, Europe and Asia, and includes grizzly and Kodiak bears. Size, diet, dens, life, status.
Bombus terrestris
The buff-tailed bumblebee is one of Europe's commonest bumblebees: an early-flying pollinator with a yearly colony, used in greenhouses and invasive abroad.
Carcharhinus leucas
The bull shark is a stocky coastal shark that can swim far up rivers into fresh water. Its size, diet, river nurseries, risk to people and Vulnerable status.
Python bivittatus
The Burmese python is a giant constrictor of Southeast Asia that can top 5 m. Facts on size, ambush hunting, egg brooding and its invasion of the Everglades.
Rhinella marina
The cane toad is a huge, toxic toad native to the Americas that became a notorious invader in Australia, Florida and Pacific islands. Size, toxins, life cycle.
Nautilus pompilius
The chambered nautilus is a shelled Indo-Pacific cephalopod with up to 90 suckerless tentacles, pinhole eyes and a gas-filled shell. Its size, life and threats.
Andrias davidianus
The Chinese giant salamander is one of the largest amphibians on Earth, up to 1.8 m long. Its mountain streams, diet, crying calls, farming and Critical status.
Vipera berus
The European adder is Britain's only venomous snake and the world's most widespread viper. Facts on its zigzag pattern, size, habitat, venom and life cycle.
Rana temporaria
The common frog is Europe's most widespread frog, from Ireland to the Urals and beyond the Arctic Circle. Its colors, spawn, tadpoles, diet and winter habits.
Phalangium opilio
The common harvestman is a long-legged arachnid, not a spider: one-piece body, two eyes, no silk, no venom. Size, diet, range, life cycle and detachable legs.
Alcedo atthis
The common kingfisher is a sparrow-sized blue and orange bird of rivers in Europe, Asia and North Africa. Its size, fishing dives, burrow nests and lifespan.
Armadillidium vulgare
The common pill bug is a land crustacean, not an insect, that rolls into a ball and eats dead leaves. Facts on its looks, range, diet, breeding and lifespan.
Pipistrellus pipistrellus
The common pipistrelle is a tiny European bat weighing 3.5–8.5 g that eats up to thousands of midges a night. Facts on its size, calls, roosts and protection.
Corvus corax
The common raven is a huge all-black songbird of the Northern Hemisphere, famous for deep croaks, play and problem-solving. Size, diet, nests, lifespan, myths.
Chelydra serpentina
The common snapping turtle is a big, rough-shelled freshwater turtle of North America. Facts on its size, powerful bite, diet, nesting, lifespan and range.
Apus apus
The common swift is a dark, sickle-winged bird that feeds, drinks and sleeps on the wing for most of the year. Size, diet, nesting, migration and decline.
Bufo bufo
The common toad is Europe's familiar warty brown toad, up to 12 cm long. Its copper eyes, skin toxins, night hunting, spring migrations, spawn and lifespan.
Vespula vulgaris
The common wasp is Europe's black-and-yellow yellowjacket. Facts on its size, paper nests, one-year colony cycle, diet, sting and spread to New Zealand.
Schistocerca gregaria
The desert locust is a grasshopper that can switch from a shy loner to a swarming plague insect. Facts on its phases, swarms, diet, life cycle and upsurges.
Camelus dromedarius
The dromedary is the one-humped camel of Arabia and North Africa. Its fat-filled hump, how it survives without water, size, lifespan and domestication.
Cyanistes caeruleus
The Eurasian blue tit is a tiny blue-and-yellow songbird of European woods and gardens, famous for acrobatic feeding and huge clutches. Size, diet, nesting.
Bubo bubo
The Eurasian eagle-owl is one of the largest owls on Earth, with orange eyes, ear tufts and a wingspan near 1.9 m. Size, diet, range, breeding and status.
Lynx lynx
The Eurasian lynx is Europe's largest wild cat, a spotted forest hunter with black ear tufts that preys on roe deer. Size, diet, range and its return to Europe.
Pica pica
The Eurasian magpie is a long-tailed black-and-white crow of Europe and Asia. Facts on its size, diet, domed nests, intelligence, lifespan and famous myths.
Lutra lutra
The Eurasian otter is a sleek, fish-eating member of the weasel family found on rivers and coasts from Ireland to Asia. Size, diet, holts, spraints, recovery.
Meles meles
The European badger is a stocky, black-and-white striped mammal that lives in family clans in underground setts and eats mostly earthworms. Size, diet, range.
Lepus europaeus
The European or brown hare is a fast, long-eared hare of open farmland. Facts on its size, speed, spring boxing, leverets, diet, lifespan and status.
Vespa crabro
The European hornet is Europe's largest social wasp, up to 35 mm long. Facts on its colors, hollow-tree nests, insect hunting, night flights and sting risk.
Erithacus rubecula
The European robin is a small orange-breasted songbird of Europe's gardens and woods. Facts on its size, song, fierce territories, nests, lifespan and range.
Lucanus cervus
The European stag beetle is Europe's largest land beetle. Facts on the males' antler-like jaws, years of larval life in dead wood, brief adult life and decline.
Sturnus vulgaris
The European starling is a glossy, speckled songbird famous for mimicry and huge murmurations. Facts on its size, diet, nests, lifespan and spread to America.
Vulpes zerda
The fennec fox is the world's smallest fox, a Sahara desert specialist with huge ears. Facts on its size, burrows, diet, water, family life and status.
Archispirostreptus gigas
The giant African millipede is the largest living millipede, up to 33.5 cm long. Its legs, slow detritus diet, curling defense, mites and lifespan explained.
Enteroctopus dofleini
The giant Pacific octopus is the world's largest octopus, a clever North Pacific mollusk. Its size, range, dens, diet, brooding mothers and 3 to 5 year life.
Ailuropoda melanoleuca
The giant panda is a black-and-white bear from the mountains of China that eats almost nothing but bamboo. Size, diet, cubs, lifespan and conservation status.
Aquila chrysaetos
The golden eagle is the most widespread eagle in the world, a dark brown hunter of hares and ground squirrels with 2 m wings. Size, range, diet and threats.
Natrix natrix
The grass snake is Europe's harmless, water-loving snake with a yellow collar. Its size, frog diet, compost-heap eggs, playing dead and the 2017 species split.
Eschrichtius robustus
The gray whale is a mottled North Pacific baleen whale that sucks prey from the seafloor and migrates between Arctic seas and Mexico. Size, diet and threats.
Triturus cristatus
The great crested newt is Britain's largest newt, with warty dark skin, an orange belly and a jagged male crest. Its size, ponds, life cycle and legal status.
Sphyrna mokarran
The great hammerhead is the biggest hammerhead shark, up to 6 m (20 ft) long. Its T-shaped head, stingray diet, warm-sea range and Critically Endangered status.
Phoenicopterus roseus
The greater flamingo is the largest and most widespread flamingo, found from Spain and France to Africa and India. Its size, diet, colonies and lifespan.
Iguana iguana
The green iguana is a large, plant-eating tree lizard of Central and South America that can top 1.5 m. Size, colors, diet, swimming, nesting and lifespan.
Phocoena phocoena
The harbor porpoise is a small, shy toothed whale of cool coastal seas. Its size, clicks, diet, North Sea and Baltic range, short lifespan and bycatch threats.
Phoca vitulina
The harbor seal is a spotted true seal of northern coasts in Europe, North America and Asia. Its size, fish diet, pups, diving, threats and conservation status.
Mellivora capensis
The honey badger, or ratel, is a tough mustelid of Africa and southern Asia. Facts on its loose skin, size, diet of snakes and bee larvae, range and lifespan.
Scutigera coleoptrata
The house centipede has 15 pairs of long legs, runs about 0.4 m (1.3 ft) per second and hunts insects in homes. Its size, eyes, venom, range and lifespan.
Acheta domesticus
The house cricket is a small brown cricket that lives around homes worldwide. Facts on how males chirp, ears on the legs, diet, life cycle and farming as food.
Passer domesticus
The house sparrow is a small, chirpy seed-eater that lives alongside people on every inhabited continent. Facts on its size, plumage, diet, nesting and decline.
Pavo cristatus
The Indian peafowl is the peacock of India and Sri Lanka, famous for the male's eyespot train. Facts on its size, calls, diet, breeding, lifespan and range.
Macrocheira kaempferi
The Japanese spider crab has the longest legs of any arthropod, spanning up to 3.7 m (12 ft). Its size, deep home off Japan, diet, camouflage and life cycle.
Ophiophagus hannah
The king cobra is the world's longest venomous snake, usually 3–4 m long. Facts on its size, hood and growl, snake-eating diet, nests, range and status.
Varanus komodoensis
The Komodo dragon is the largest living lizard, found only on a few Indonesian islands. Facts on its size, hunting, venom, virgin births and Endangered status.
Pteropus vampyrus
The large flying fox is one of the world's biggest bats, with wings up to 1.5 m (5 ft) across. Facts on its fruit and nectar diet, eyesight, roosts and threats.
Mustela nivalis
The least weasel is the world's smallest carnivoran, weighing as little as 25 g. Its size, vole hunting, white winter coat, breeding, range and status.
Eublepharis macularius
The leopard gecko is a spotted, ground-dwelling gecko of dry grassland and rocky hills in South Asia. Wild facts on its eyelids, fat tail, diet and breeding.
Radianthus magnifica
The magnificent sea anemone is a large Indo-Pacific reef anemone and clownfish host. Its size, colors, algae partners, movement, bleaching and new name.
Vespa mandarinia
The northern giant hornet, or Asian giant hornet, is the world's largest hornet. Facts on its size, range, sting, honey bee raids and stay in North America.
Amphiprion ocellaris
The ocellaris clownfish is an orange-and-white reef fish that lives inside sea anemones. Its size, range, diet, sex change, egg care and the real Nemo story.
Vanessa cardui
The painted lady is the most widespread butterfly on Earth, found on every continent except Antarctica. Its looks, host plants, life cycle and migration.
Odontodactylus scyllarus
The peacock mantis shrimp is a colorful Indo-Pacific reef crustacean with a club strike of up to 23 m/s and complex eyes. Facts on size, diet, burrows and life.
Falco peregrinus
The peregrine falcon is the fastest animal on Earth, diving at over 300 km/h. Facts on its size, bird diet, worldwide range, city nests and recovery from DDT.
Ursus maritimus
The polar bear is the largest land carnivore, a marine mammal that hunts seals from Arctic sea ice. Size, fur and black skin, dens, range, threats and status.
Mantis religiosa
The praying mantis is a green or brown ambush hunter 5–8 cm long with spiny grasping forelegs. How it hunts, sees in 3D, mates and survives winter as an egg.
Pterois volitans
The red lionfish is a striped, venomous reef fish of the Indo-Pacific that now invades Atlantic and Caribbean reefs. Its size, hunting, breeding and impact.
Sciurus vulgaris
The red squirrel is Eurasia's native tree squirrel, with ear tufts and a red to near-black coat. Size, diet, nests, lifespan and why it declined in Britain.
Formica rufa
The red wood ant builds large thatched mounds of pine needles in European woodlands. Its size, colonies with many queens, formic acid, diet and conservation.
Malayopython reticulatus
The reticulated python of Southeast Asia is the world's longest snake, measured at almost 7 m in the wild. Facts on its size, net-like pattern, diet and range.
Columba livia
The rock pigeon is the wild cliff bird behind every city pigeon and homing pigeon. Facts on its size, range, nests, crop milk, intelligence and history.
Scarabaeus sacer
The sacred scarab is a black ball-rolling dung beetle of the Mediterranean and North Africa, revered in ancient Egypt. Size, dung balls, larvae and range.
Crocodylus porosus
The saltwater crocodile is the largest living reptile. Its size, range from India to Australia, life at sea, hunting, nesting, recovery and the risk to people.
Antigone canadensis
The sandhill crane is the most numerous crane on Earth: a tall gray bird with a red crown and bugling call. Facts on its size, dances, diet, migration and life.
Coccinella septempunctata
The seven-spot ladybug is a red beetle 5–8 mm long with seven black spots that hunts aphids. Its life cycle, defenses, winter clusters and spread to America.
Panthera uncia
The snow leopard is a big cat of the high mountains of Central and South Asia. Facts on its thick fur, long tail, size, prey, voice and Vulnerable status.
Manis javanica
The Sunda pangolin is a scaly, ant-eating mammal of Southeast Asia that rolls into a ball when threatened. Facts on its scales, diet, young and illegal trade.
Chamaeleo calyptratus
The veiled chameleon is a large, casque-headed chameleon from Yemen and Saudi Arabia. Facts on its casque, colors, tongue, eyes, eggs, lifespan and range.
Apis mellifera
The western honey bee is a social bee that lives in colonies of up to 80,000. Facts on its queen, workers and drones, comb, waggle dance, honey and spread.
Ciconia ciconia
The white stork is a tall black-and-white bird that nests on rooftops and migrates from Europe to Africa. Facts on its size, diet, bill-clattering and comeback.
Arothron hispidus
The white-spotted puffer is a common Indo-Pacific pufferfish that inflates with water, has a beak of fused teeth and carries tetrodotoxin. Size, diet and range.
Salticus scenicus
The zebra jumping spider is a small black-and-white hunter of sunny walls in Europe and North America, with big eyes, sharp vision and accurate leaps.