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Arctic Hare
Photograph by Paul Nicklen
Shortened ears and thick, white fur are among the physical traits that arctic hares have adapted to survive in the harsh, frozen tundra.
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Arctic Fox
Photograph by Norbert Rosing
The lush white coat of the arctic fox provides both warmth and camouflage in winter.
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Baby Harp Seal
Photograph by Norbert Rosing
A baby harp seal rests on the Arctic ice. Its mother can distinguish it from hundreds of others by scent alone.
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Desert Cottontail Rabbit
Photograph by Joel Sartore
Ubiquitous throughout North and South America, cottontail rabbits, including this desert variety, are noted for their fluffy "cotton" tail.
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Snowshoe Hare
Photograph by Michael S. Quinton
The aptly named snowshoe hare has particularly large feet and a winter-white coat. In the summer though, their fur turns brown, taking up to ten weeks to change color completely.
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Musk-Oxen
Photograph courtesy U.S. Fish and Wildlife Service
Thick, shaggy fur keeps musk-oxen warm in the harsh Arctic tundra.
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Siberian Tigers
Photograph by Michael Nichols
Of the three remaining species of tigers, Siberian tigers are the largest. While there are only 400 to 500 left in the wild, the population is considered stable, and conservation programs are introducing captive-born tigers to the wild.
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Bighorn Sheep
Photograph by Donald J. Crump
Bighorn sheep live in divided herds: ewes and lambs together in larger groups, rams in smaller bachelor herds. They usually only cross paths in the fall for mating.
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King Penguins
Photograph by Steve Raymer
King penguins' flippers are distinctively large, helping them dive deep in the icy ocean. On land, they waddle and toboggan across the ice—sliding on their bellies, and propelling themselves with their flippers.
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Emperor Penguins
Photograph courtesy Giuseppe Zibordi/Michael Van Woert/
NOAA NESDIS, ORAEmperor penguins are the largest penguins, standing about 4 feet (1.2 meters) tall.
Animals
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Aardvark
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Adélie Penguin
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African Elephant
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African Lion
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African Wild Dog
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Albatross
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Alligator Snapping Turtle
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Amazon Horned Frog
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American Alligator
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American Bison
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American Bullfrog
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American Crocodile
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Ammonite
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Andean Condor
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Anglerfish
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Ankylosaurus Magniventris
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Ant
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Arabian (Dromedary) Camel
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Arctic Fox
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Arctic Hare
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Arctic Skua
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Armadillo
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Asian Elephant
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Asian Lion
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Atlantic Bluefin Tuna
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Atlantic Puffin
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Aye-Aye
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Baboon
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Bactrian Camel
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Bald Eagle
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Baltimore Oriole
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Beaver
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Beluga Whale
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Bengal Tiger
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Bird of Paradise
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Black Bear
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Black-Footed Ferret
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Black Mamba
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Black Rhinoceros
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Blacktip Shark
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Black Widow Spider
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Bluebird
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Blue Crab
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Blue-Footed Booby
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Blue Jay
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Blue Marlin
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Blue Whale
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Boa Constrictor
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Bobcat
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Bottlenose Dolphin
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Box Jellyfish
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Brachychampsa Montana
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Brown Bear
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Bull Shark
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Burmese Python
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Butterflyfish
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California Condor
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California Sea Lion
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Canada Goose
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Cane Toad
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Canvasback
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Caribou
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Carolina Wren
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Cheetah
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Chimpanzee
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Chipmunk
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Cicada
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Clouded Leopard
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Clown Anemonefish
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Coelacanth
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Common Earthworm
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Common Loon
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Common Octopus
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Common Sandpiper
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Common Vampire Bat
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Common Wombat
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Coral
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Cottontail Rabbit
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Coyote
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Cretoxyrhina Mantelli
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Cuban Screech Owl
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Cubera Snapper
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Deer Tick
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Devil Frog
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Dingo
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Dog Snapper
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Dolichorhynchops Osborni
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Domestic Cat
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Domestic Dog
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Draco Lizard
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Dugong
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Eastern Coral Snake
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Eastern Diamondback Rattlesnake
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Eastern Gray Kangaroo
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Egyptian Giant Solpugid (Camel Spider)
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Electric Eel
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Elephant Seal
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Elk
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Emperor Penguin
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Fennec Fox
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Firefly (Lightning Bug)
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Flying Fish
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Flying Snake
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Fossa
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Frilled Lizard
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Fur Seal
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Galápagos Tortoise
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Gelada
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Gentoo Penguin
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Geographic Cone Snail
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Giant Anteater
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Giant Clam
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Giant Pacific Octopus
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Giant Panda
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Giant River Otter
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Giant Squid
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Gibbon
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Gila Monster
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Giraffe
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Golden Cowrie
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Golden Eagle
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Golden Jellyfish
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Golden Lion Tamarin
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Golden Poison Dart Frog
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Gray Whale
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Great Blue Heron
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Great Egret
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Greater Flamingo
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Greater Rhea
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Great Horned Owl
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Great White Shark
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Green Anaconda
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Green Basilisk Lizard
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Green-Eyed Tree Frog
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Green Iguana
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Green Sea Turtle
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Grizzly Bear
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Groundhog
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Hammerhead Shark
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Harbor Porpoise
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Harp Seal
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Hawaiian Monk Seal
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Hawksbill Sea Turtle
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Hedgehog
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Henodus Chelyops
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Hesperornis Regalis
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Hippopotamus
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Honeybee
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Horned Toad (Short-Horned Lizard)
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Hornet
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Horse
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Howler Monkey
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Humpback Whale
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Impala
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Indian Rhinoceros
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Ivory-Billed Woodpecker
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Jackrabbit
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Jaguar
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Kemp's Ridley Sea Turtle
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Killer Whale (Orca)
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King Cobra
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King Vulture
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Kinkajou
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Koala
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Komodo Dragon
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Krill
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Ladybug
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Laughing Kookaburra
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Leafy and Weedy Sea Dragon
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Leatherback Sea Turtle
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Leopard
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Leopard Seal
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Leptoceratops Gracilis
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Lesothosaurus Diagnosticus
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Lionfish
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Little Red Flying-Fox
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Llama
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Lobster
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Locust
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Loggerhead Sea Turtle
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Lynx
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Macaw
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Madagascar Hissing Cockroach
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Mallard Duck
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Manatee
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Mandrill
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Marine Iguana
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Matschie's Tree Kangaroo
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Meerkat
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Meller's Chameleon
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Mexican Axolotl
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Mola (Sunfish)
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Mole Rat
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Monarch Butterfly
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Mongoose
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Mononykus Olecranus
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Moose
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Mosquito
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Mountain Goat
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Mountain Gorilla
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Mountain Lion
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Mouse Lemur
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Mudpuppy
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Musk-Ox
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Narwhal
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Nile Crocodile
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North American River Otter
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Northern Leopard Frog
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Nudibranch
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Nurse Shark
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Nutria
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Ocelot
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Olive Ridley Sea Turtle
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Opossum
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Orangutan
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Oriental Fire-Bellied Toad
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Osprey
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Ostrich
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Oyster
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Ozark Big-Eared Bat
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Pachycephalosaurus Wyomingensis
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Parrot
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Parrot Fish
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Peacock
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Pelican
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Peregrine Falcon
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Pileated Woodpecker
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Platecarpus
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Platypus
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Poison Dart Frog
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Polar Bear
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Porcupine
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Portuguese Man-of-War
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Prairie Dog
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Praying Mantis
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Proboscis Monkey
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Pronghorn
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Protosphyraena
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Protostega Gigas
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Przewalski's Horse
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Pufferfish
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Queen Angelfish
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Quetzal
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Raccoon
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Rainbow Trout
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Raven
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Red Crab
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Red-Eyed Tree Frog
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Red-Footed Booby
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Red Fox
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Red Kangaroo
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Red Leaf Monkey
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Red Panda
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Red-Tailed Hawk
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Red Uakari
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Rhesus Monkey
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Right Whale
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Ringed Seal
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Ring-Necked Pheasant
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Ring-Tailed Lemur
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Rockhopper Penguin
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Rocky Mountain Bighorn Sheep
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Ruby-Throated Hummingbird
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Sailfish
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Saltwater Crocodile
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Sandhill Crane
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Sand Tiger Shark
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Scarab
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Scorpion
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Sea Anemone
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Sea Cucumber
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Seahorse
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Sea Otter
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Siberian Tiger
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Sifaka
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Skunk
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Sloth Bear
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Snow Goose
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Snow Leopard
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Snowshoe Hare
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Snowy Owl
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Sockeye Salmon
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Spectacled Bear
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Sperm Whale
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Spider Monkey
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Spotted Hyena
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Spotted Salamander
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Spring Peeper
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Squirrel
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Starfish (Sea Star)
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Steller Sea Lion
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Steller's Sea Eagle
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Stick Insect
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Stingray
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Styxosaurus Snowii
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Sumatran Rhinoceros
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Sun Bear
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Tapir
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Tarantula
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Tasmanian Devil
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Thescelosaurus Neglectus
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Thick-Billed Murre
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Thomson's Gazelle
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Three-Toed Sloth
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Tiger Salamander
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Tiger Shark
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Toucan
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Triceratops Horridus
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Triggerfish
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Troodon Formosus
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Tundra Swan
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Tusotheuthis Longa
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Two-Toed Sloth
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Tylosaurus Proriger
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Tyrannosaurus Rex
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Velociraptor Mongoliensis
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Wallaby
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Wallace's Flying Frog
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Walrus
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Warthog
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Warty Newt
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Wasp
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Water Buffalo
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Web-Footed Gecko
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Weddell Seal
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Western Lowland Gorilla
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Whale Shark
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White-Eared Kob
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White Rhinoceros
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White-Tailed Deer
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Whooping Crane
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Wildebeest
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Wild Turkey
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Wolf
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Wolverine
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Wood Stork
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Xiphactinus Audax
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Zebra