Fauna in the World of Avatar

Fauna varies vastly in the World of Avatar, and has a notable characteristic in that most of the animals presented are chimeras - crossbreeds of two real world animals. There are, however, notable exceptions, including Earth King Kuei's pet bear, Bosco (which notably confused everybody in Team Avatar).

Habitats
There are several distinct habitats in the Avatar World, suitable for different animals and plants.

Si Wong Desert
The Si Wong Desert has the driest, hottest climate in the world. The desert's ecosystem primarily consists of a few scavenger species such as the gilacorn, the large predatory insect, buzzard wasps, giant rhinoceros beetles, which are used for transportation, scorpions, and jackalopes.

Great Divide
The Great Divide has various species due to an arid climate. This allows the survival of some creatures, such as the canyon crawlers.

Foggy Swamp
Due to the humid air, the Foggy Swamp has a large variety of fauna. Hundreds of living things are densely packed into the swamp, which is home to many creatures, including glow flies, elbow leeches, screeching birds, and catgators.

Northeastern Earth Kingdom
Vast plains, mountains, and a few temperate forests are scattered across the Northeastern Earth Kingdom. Many habitats are available for a wide variety of species.

Fire Nation (tropical)
The Fire Nation's tropical climate allows rainforests to strive, where many animals, such as the mongoose dragon, the boarcupine, and the badgerfrog live.

Poles
The Northern and Southern Water Tribe's low temperatures do not allow much fauna to live, but there are some which have adapted to their cold environments, such as otter penguins, tiger seals, and buffalo yaks.

Air Nomads

 * Badgerfrog - Green and brown frog with trim of white fur.
 * Firefly - Bioluminescent flying insect.
 * Flying bison - Large, flying mammals sacred to Air Nomads as the original airbenders.
 * Hermit crab - Crab with a shell-switching lifestyle.
 * Ring-tailed winged lemur - Small animal closely related to winged lemurs.
 * Winged lemur - Flying white and black lemurs kept as pets.

Water Tribes

 * Arctic hen - Hen that lives in the arctic; bred for meat.
 * Arctic hippo - Hunted for its blubber.
 * Arctic seal - Swimming mammals that live in the South Pole.
 * Arctic wolf - A large wolf; its teeth are sometimes used in knives.
 * Armadillo wolf - Armadillo and wolf cross.
 * Buffalo yak - Four-legged, furry, horned mammal used for transportation.
 * Fish - Of various types.
 * Koala otter - Oceanic mammal with grey fur and large ears.
 * Octopus - Cephalopod that lives in the sea.
 * Otter penguin - Six-flippered Penguin used for penguin sledding.
 * Polar bear dog - Large, four-legged wild carnivore; feared and hunted.
 * Polar dog - Large dog; kept in Southern Water Tribe as pets.
 * Polar leopard - White leopard found at the poles.
 * Tiger seal - Striped brown seal; hunted for meat.
 * Sea sponge - Aquatic invertebrate.
 * Turtle seal - Brown seal with a hard shell.
 * White hamster - Small, white rodents.

Earth Kingdom

 * Ant - Small insects that live in large colonies.
 * Armadillo bear - Large bear with a hard, segmented shell.
 * Armadillo lion - Armadillo and lion cross.
 * Armadillo wolf - Armadillo and wolf cross.
 * Badgermole - Enormous, subterranean blind mammals; original earthbenders.
 * Bear - A large brown bear; extremely rare.
 * Bearded cat - Domesticated feline with beard-like whiskers.
 * Blue jay - Bird with blue feathers.
 * Boarcupine - Large wild boar covered in sharp, detachable spines.
 * Bull pig - Boar and bull cross.
 * Bumble fly - Buzzing, flying insect.
 * Buzzard wasp - Enormous flying insects which live under the Si Wong Rock.
 * Cabbage slug - Destructive agricultural pest.
 * Camelephant - Four-legged mammal with a long nose; used for transportation.
 * Canyon crawler - Insectoid, six-eyed, onmiverous creatures native to the Great Divide.
 * Cat - Fluffy white cat with green eyes or slim beige cat with patches of brown.
 * Cat owl - Large, predatory bird with cat-like face.
 * Catgator - Stocky river-dwelling reptile named for its catlike barbels.
 * Chameleon - Small, color-changing lizard with yellowish eyes and a crest on its head.
 * Chicken- A flightless, farmed bird raised for food and eggs.
 * Dog - Four-legged, generally domesticated mammal.
 * Dove - White birds related to pigeons.
 * Dragonfly - Flying, serpentine lizards resembling dragons.
 * Duck - Farmed bird; often roasted.
 * Eel hound - Amphibious four-legged creature; used for transportation on land and water.
 * Elbow leech - Enormous leech; attaches mainly to elbows.
 * Elephant koi - Enormous oceanic koi fish.
 * Elephant mandrill - Mandrill and elephant cross.
 * Elephant rat - Black rodent with an elephant-like snout.
 * Fire ferret - Red arboreal mammal native to the Earth Kingdom.
 * Frog - Amphibian that lives in and near water.
 * Fox antelope - Horned four-legged herbivore with a foxlike tail
 * Gemsbok bull - Stocky brown animal with large horns.
 * Giant rhinoceros beetle - Giant beetle; used for transportation.
 * Giant fly - Giant bug; eaten in the Foggy Swamp.
 * Giant night crawler - Giant worm.
 * Gilacorn - Small desert-dwelling, egg-stealing lizard.
 * Glow fly - Fly that glows.
 * Goat dog - Small, shaggy-haired white dog-like creature kept as a pet.
 * Gopher bear - Hybrid-like beast of a gopher and a bear.
 * Gorilla goat - Gorilla and goat cross.
 * Hippo - Large, semi-aquatic mammal.
 * Hybrid pigs - Domesticated, crossbred farm animals.
 * Hog - Wild forest-dwelling mammal hunted for food.
 * Hog monkey - Forest-dwelling ape with a squashed face.
 * Hopping llama - Presumably a llama that can hop, as the name implies.
 * Jackalope - Jackrabbit with large antlers.
 * Leech-A-Pillar - Leech and caterpillar cross.
 * Meadow vole - Small white rodent.
 * Ostrich horse - Large brown bird; used for transportation.
 * Platypus bear - Bear with a large bill and flat tail; lays edible eggs.
 * Poodle monkey - Domesticated simian pet.
 * Poodle pony - A hybrid of a poodle and pony.
 * Possum chicken- A possum and chicken cross; lives in swamps.
 * Purple pentapus - Small, five-legged cephalopod.
 * Pygmy pumas - Smaller, sleeker versions of pumas bred for compact city living.
 * Quilled chameleon - Reptile found in the densely forested areas of the Earth Kingdom.
 * Rabaroo - Large hopping rabbit.
 * Lop-eared rabbit - A small, long-eared mammal.
 * Reptile bird - Green reptilian bird with large talons.
 * Saber-tooth moose lion - Moose and lion cross; cubs are non-aggressive.
 * Scorpion - Poisonous insect found in deserts.
 * Screeching bird - White bird with piercing, shriek-like call.
 * Serpent - A serpent-like seahorse.
 * Se tu - Large green catfish.
 * Scorpion bee - Stinging, swarming, flying insect.
 * Shirshu - Unusual eyeless mammal with a pink, star-shaped nose. Has a very keen sense of smell for navigation.
 * Singing groundhog - Small, brown, furry rodent with musical call.
 * Skunk bear - Skunk and bear cross.
 * Skunkfish - Foul-smelling, oily fish.
 * Sooty copper fritillary - An orange and yellow butterfly.
 * Sparrowkeet - Small colorful birds, sometimes kept as pets.
 * Spider - Eight-legged, web-weaving arachnid.
 * Spider snake - A spider and snake hybrid with ten eyes.
 * Turkey duck - Turkey and duck cross, bred for meat.
 * Unagi - Enormous eel that inhabits Kyoshi Island.
 * Viper bat - Serpent-like creatures with bat wings found in caves.
 * Wolfbat - Large, snub-nosed bats found in caves.
 * Wood frog - Frog found in swamps with medicinal properties.

Fire Nation

 * Aardvark sloth - Anteater and sloth cross.
 * Boarcupine - Large wild boar covered in sharp, detachable spines.
 * Camelephant - Elephant and camel cross; used for transportation.
 * Cavehopper - White arthropod with four legs.
 * Clam - Water-dwelling mollusk; easily affected by pollution.
 * Cow hippo - Domesticated, meat-eating animal with black and white spots.
 * Dragon - Large, horned reptile with a long body; the first firebenders.
 * Messenger hawk - Messenger birds of prey with dark red or brown feathers.
 * Dragon moose - Dragon and moose cross.
 * Duck - Farmed bird; often roasted.
 * Eagle hawk - Most likely a cross between an eagle and a hawk. Bird with sharp eyesight.
 * Elephant rat - Elephant and rat cross.
 * Fire ferret - Ferret and red panda cross.
 * Hawk - Non-hybridized hawk.
 * Koala sheep - Koala and sheep cross.
 * Komodo rhino - Komodo dragon and rhinoceros cross.
 * Lion vulture - Vulture and lion cross.
 * Maggot slug - Most likely a hybrid of a maggot and a slug.
 * Mongoose dragon - Mongoose and dragon cross.
 * Puma goat - Most likely a hybrid of a puma and a goat.
 * Raven eagle - Raven and eagle cross.
 * Sea lion - Large aquatic mammal; sometimes used for transportation.
 * Sea raven - Fierce black seabirds.
 * Sea slug - Large slug; sometimes cooked.
 * Sealguana - Large aquatic reptile.
 * Snail sloth - Snail and sloth cross.
 * Tigerdillo - Presumably a hybrid between a tiger and an armadillo.
 * Toucan puffin - Sea birds with large, colorful bills.
 * Turtle crab - Crabs with protective turtle shell.
 * Turtle duck - Ducks with protective shells.
 * Two-headed fish - Mutated fish found in polluted waters of Jang Hui River.

Spirit World

 * Curly-tailed blue nose - Seen without face.
 * Forest Spirit - Supernatural entity who watches over the forested regions of the northwestern Earth Kingdom.
 * Giant wolf - Giant wolf.
 * Hei Bai - Spirit of a panda bear.
 * Spirit World firefly - Creature made up entirely of glowing light.
 * Tui - Fish that is the Moon Spirit, resides at the Spirit Oasis at the North Pole.
 * La - Fish that is the Ocean Spirit, resides at the Spirit Oasis at the North Pole.

Others

 * Flying boar - Symbol of the Beifong family; possibly either very rare, extinct, or mythological.
 * Lion turtle - Lion and turtle cross.
 * Lizard crow - Lizard and crow cross.
 * Pheasant squirrel - A likely cross between a common pheasant and a squirrel.
 * Spider cat - A cross between a cat and a spider.
 * Spiderfly - An insect most likely based on the common spider and fly.
 * Spider snake - Spider and snake cross.
 * Squirrel - Just a squirrel. Seen over the lion turtle.
 * Two-headed rat viper - Rodent-eating serpent.
 * Walrus yak - A cross between a walrus and a yak.
 * Weasel snake - Likely a cross between a weasel and a snake.
 * Zebra frog - A cross between a zebra and a frog.