• Ostrich  -  Ostriches can run faster than horses, and the male ostriches can roar like lions.
  • Kangaroo - Kangaroos use their tails for balance, so if you lift a kangaroo’s tail off the ground, it  can’t hop. A new born kangaroo is small enough to fit in a teaspoon.
  • Bat -  Bats are the only mammals that can fly. They can eat up-to 1000 insects per hour.
  • Spider-  There are 50,000 spiders per acre in green areas. A Tarantula spider can live for two years without eating a single thing.
  • Tiger -  Tigers not only have stripes on their fur, they also have them on their skin. No two tigers ever have the same stripes.
  • Crocodile -  To escape the grip of a crocodile’s jaw, push your thumb into its eyeball – It will let you go instantly. A crocodile can't take out its tongue.
  • Butterfly -  Butterflies have two compound eyes consisting of thousands of lenses, yet they can only see the colors red, green and yellow. Butterflies taste nectar with their feet.
  • Cat - Domestic cats purr at about 26 cycles per second, the same frequency as an ideal diesel engine. A cat uses its whiskers to determine if the space is too small to squeeze through. The Whiskers acts as an antenna, helping the animal to judge the precise width of any passage. A cat kidneys are so effective that they can re-hydrate by drinking sea water.
  • Flea -  Fleas can jump up to 200 times their height. This is equivalent to a man jumping the Empire State Building in New York.
  • Koala - Koala bears almost exclusively eat only eucalyptus leaves and nothing else. It is found that male koala have two penises and female koala have two vagina.

  • Beaver - Beavers’ teeth never stop growing, they must constantly gnaw on objects to keep them at a manageable length. Their teeth would eventually grow into their brain if they didn’t maintain them.
  • Ant -  There are one million ants for every human in the world. These creatures also never sleep and do not have lungs.
  • Butterfly -  Butterflies have two compound eyes consisting of thousands of lenses, yet they can only see the colors red, green and yellow.
  • Snail -  A snail can grow back a new eye if it loses one. It can also sleep for about 3 years at a time.
  • Turtle -  You can tell a turtle’s gender by the noise it makes. Males grunt and females hiss.
  • Squirrel -  Millions of trees are accidentally planted by squirrels that bury nuts and then forget where they hid them. They can also spot and remember their hiding places of up to 10,000 Nuts.
  • Giraffes -  Giraffes have no vocal cords and their tongue are blue-black in color. They can clean their ears with their 50 cm (20 Inch) Tongue. They have same number of bones in the neck as humans. 
  • Dog -  Dogs’ nose prints are as unique as human fingerprints and can be used to identify them. They have lived with human for about 14,000 years. The only city where dogs  are more than human is Paris. A happy dog is said to wag its tail to right while the sad and scared ones to left.
  • Humpback whale -  Humpback whales create the loudest sound of any living creature. 
  • Seahorse -  The slowest fish is the seahorse, which moves along at about 0.01 mph. It is also found that seahorse is the only animal where males gives birth and take care of their young's.
  • Pig -  Pigs communicate constantly with one another; more than 20 vocalizations have been identified that pigs use in different situations, from wooing mates to saying, I’m hungry!!
  • Hummingbird -  Hummingbirds are the only birds that can fly backwards and their wings can beat at up to 80 times per second.
  • Sail Fish -  Sailfish can swim up to 68 Mph. It is one of the fastest swimmer in the world.
  • Pigeons -  Pigeons can tell the difference between impressionist paintings by Monet and Cubist works by Picasso. They can also tell when the Monet are hung upside down.
  • Fruit-flies -  Studies have found that male fruit-flies rejected by females drink significantly more alcohol than those that have had a successful encounter.
  • Platypus and the Echinda -  They are they only mammals that lays eggs and produce milk. 
  • Flamingo -  Flamingo can only eat and swallow when their head is upside down.
  • King Cobra -   Venom of King Cobra are so deadly that one gram of it is enough to kill a human 150 times over.
  • Ming - The oldest known animal was ming, it was 407 years old clam, discovered in Iceland in 2007.
  • Jellyfish -  The Turritopsis dohrnii species of Jellyfish can revert back to it's childhood stage after becoming sexually mature, effectively making itself immortal. Jelly fish have lived for 650 million years which means they have outdated both sharks and Dinosarous.
  • Dolphin -  Only half of the dolphin's brain sleeps, the other half makes sure that it comes up of water so it doesn't gets drown.
  • Frog -  The poison arrow frog has enough poison to kill 2,200 people at a time.
  • Housefly - The total life span of a single housefly is 14 days
  • Cows -  Cows from different region have different "Moo" accent.
  • Chameleon -  Chameleon don't change their color according to the background, they change color depending on number of emotional states ( as a response to mood, temperature, health, communication, etc). 
  • Camel -  A annoyed camel will spit at a person.
  • Shark -   Sharks are immune to all known disease. 
  • Slugs -   Human share about 70 % of our DNA with Slugs.
  • Mole -  A mole can dig 300 ft long tunnel in just one night.
  • Zebra -  Zebra strips are some of the most distinct markers in the animal kingdom. Like human's fingerprint, no two set of zebra have same strips.
  • Moose -   A moose can feel a fly sitting on its antlers.
  • Rabbit -  Rabbits and parrots are the only animal that can see behind without turning their head.
  • Octopus -   Octopus has three heart and the color of their blood is blue. Since octopus has no bones, their bodies are flexible, so they can slither through openings not bigger than their eye balls.
  • Fire flies -   Fire flies are not actually flies but a beetle.
  • Deer -   A new born Chinese deer are so small that they can be held in the palm the hand.
  • Gorillas -   Gorillas can catch human cold and other sickness.
  • Owl -  Owls are the only bird that raise their upper eyelid to wink, while all other birds raise their lower eye-lids to wink.
  • Hippo -  When hippos are upset, their sweat turns red.

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