Sphinx Hairless Cat: Things could get chilly for this breed, which aren't actually hairless but instead may be covered with vellus hair, which is much thinner and lighter than a typical coat.
Vikki Hart/Getty Images
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Warthog
Warthog: It's a haggard outlook for this member of the pig family, whose name comes from four wart-like growths on its head that are used to store fat and for defense in its native Africa.
Proboscis Monkey: Known for its long nose (which can measure up to 7 inches long), it is also one of the largest of its species on its native continent Asia.
Vampire Bat (Desmodus rotundus), portrait, Costa Rica
Vampire Bat: Native to Mexico, Central America and South America, this creature's only source of food is blood. Thermo receptors on the bat's nose help it to detect prey.
Michael & Patricia Fogden/Getty Images
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Portrait of Reef Lizardfish, Synodus variegatus, Cabilao Island, Visayas Islands, Philippines
Reef Lizardfish: This creature's colorful exterior helps it remain camouflaged from its prey. The fish perches underwater on rocks and coral and in sand while waiting to attack.
Ethan Daniels/Getty Images
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The Chinese Crested and Chihuahua mix
Chinese Crested and Chihuahua Mix: This pup (named "Elwood") weighs in at just 6 pounds and was rescued as the result of a New Jersey SPCA investigation. He won the title of World's Ugliest Dog of 2007.
Ben Margot/AP Photo
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Tasmanian Devil
Tasmanian Devil: Today, this marsupial is found only on the island of Tasmania in Australia. Its large head and neck allow it to have one of the strongest bites per body mass index of any land predator.
Juergen & Christine Sohns/Getty Images
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Three-toed Sloth
Three-Toed Sloth: Unlike many other land animals, this mammal doesn't maintain a constant body temperature, which limits it to living in warmer environments. The three-toed sloth calls Central America and South America home.
Morales/Getty Images
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California Condor (Gymnogyps californianus)
California Condor: A critically endangered species, this bird is native to California. It's the largest North American land bird and one of the longest living birds, with a lifespan of up to 60 years.
ZSSD/Getty Images
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Naked Mole-Rat
Native to East Africa and South Africa, this burrowing rodent uses its protruding teeth to dig; its lips are sealed (literally) behind its teeth to keep dirt from getting into its mouth.
Samuel R Maglione/Getty Images
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Tarsier
Tarsier: Extremely shy animals that live in South Asia, this primate has hard-to-miss eyes that typically measure 16 mm in diameter, larger than its entire brain.
Andre Hoffmann/Getty Images
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Blobfish
Blobfish: Living deep in the waters of Tasmania and Australia, the blobfish is rarely seen by humans. Its gelatinous body and lack of muscle help it to keep a density that's slightly less than that of water, allowing it to float just above the sea floor without using much energy.
Caters News Agency
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King Vulture
King Vulture: One of the largest vultures in the world, this bird makes its home in Central America and South America. The hooked tip and sharp bill of its beak often make it the first scavenger to cut into a carcass.
Peter Orr/Getty Images
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Deep Sea Anglerfish
Deep Sea Anglerfish: A fleshy growth, or lure, projects from this fish's head and attracts prey. When touched, it triggers the anglerfish's teeth to attack.
Bluegreen Pictures/Alamy
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Alligator Snapping Turtle
Alligator Snapping Turtle: The largest freshwater turtle in North America, it's mainly found in the southern United States. Its spikes and raised plates resemble primitive dinosaur characteristics and distinguish it from other snapping turtles.
Elliott Minor/AP Photo
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Bactrian Camel
Bactrian Camel: Native to central Asia, it's one of the two surviving species of camels today. This creature regularly eats snow to take care of its water needs, which makes it more adaptable to different environments. Out of the 200 million living today, most are domesticated.
Raj Kamal/Getty Images
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Red-Lipped Batfish
Red-Lipped Batfish: Found in the Galapagos Islands, these red-lipped fish are not known for their swimming abilities. Instead, they use their pectoral fins to "walk" on the sea floor.
imagebroker/Alamy
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Florida Soft-Shelled Turtle
Florida Soft-Shelled Turtle: One of the fastest turtles, it has a long, snorkel-like nose that allows it to live an almost entirely aquatic existence in the still waters of Florida and other parts of the southern United States.
Johann Schumacher/Alamy
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Deep Sea Barracuda
Deep Sea Barracuda: A salt water dweller, this fish is known for its short bursts of speed (which can reach 27 mph) to reach prey.
Jeff Rotman/Getty Images
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Matamata
Matamata: A freshwater turtle from South America, it has a shell and head that resemble tree bark and leaves. As the turtle floats, its skin helps to disguise it as vegetation until other fish are close enough to be captured.
Martin Harvey/Getty Images
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Flying foxes
Flying Foxes: The largest of its species, this fruit bat is found in forests and swamps near coastal areas in Africa, Southeast Asia, Australia and the Pacific & Indian islands. They are clumsy in landing and often have to crash into bushes or trees to come to a stop.
Tim Flach/AFP/Getty Images
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Wuru' the Dugong
Wuru' the Dugong: This large marine mammal is shown in the Mermaid Lagoon exhibit at Sydney Aquarium on Dec. 19, 2008. It is believed that mermaid myths were born from pirates and sailors sighting dugongs.
Torsten Blackwood/AFP/Getty Images
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Baird's Tapir
Baird's Tapir: A large browsing animal (similar to a pig), this inhabitant of Central America, South America and Asia often raises its snout and shows its teeth to detect smell.
Martin Harvey/Getty Images
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Golden Snub Nose Monkey
Golden Snub Nose Monkey: Native to the mountainous regions of China, these primates have golden hair that helps scientists determine age and gender. Young monkeys have brown hair, while adult males have longer, thicker hair than females.
Natural Visions/Alamy
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Little Lorikeets
12-day-old Little Lorikeets: With special brush-like tongues for collecting nectar, these small- to medium-sized parrots are mostly found in Australia.
Mark Smith/Newspix/Getty Images
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Frill Shark
Frill Shark: This creature usually lives in water 600 meters deep or more. Its body shape and number of gills are similar to those of fossils of sharks that lived 350 million years ago.
Awashima Marine Park/Getty Images
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Wolf Spider
Wolf Spider: With eight eyes arranged in three rows, these spiders rely on their excellent eyesight to hunt prey.
Cyril Ruoso/JH Editorial/Getty Images
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Komodo dragon
Komodo Dragon: The largest living of its species, this lizard lives in the island region of Indonesia, including Komodo Island, and dominates the ecosystems where it lives, as it can measure up to 10 feet in length and weigh up to 150 pounds.
Reuters
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Aye-Aye
Aye-Aye: With rodent-like teeth and a long middle finger used to drill into tree trunks for food, this lemur is native to Madagascar and is the world's largest nocturnal primate.
Rob Cousins/Bristol Zoo via Getty Images
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Vundu catfish
Vundu catfish: Capable of reaching over 5 feet in length, this fish (held by Jeremy Wade) can reach a maximum known weight of 121 pounds.
Courtesy Animal Planet
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A featherless, genetically engineered chicken
A Featherless, Genetically Engineered Chicken: In 2002, scientists at the Hebrew University of Jerusalem's Department of Agriculture in Israel released photos of their 'The Naked Chicken," a low-calorie (the lack of feathers means there's less fat) and faster maturing bird.