The mantis shrimp has an extending claw that can punch a hole through a glass jar. See more

The Nile catfish swim upside down. See more

Pigs can't sweat because they don't have sweat glands. See more

Crocodiles swallow stones to help them dive deeper. See more

Cats have over one hundred vocal sounds, dogs only have about ten. See more

Bulls are not attracted to the colour red. See more

A flea can jump 350 times its own body length. See more

Bats always turn left when exiting a cave. See more

Elephants are the only animals that can't jump. See more

It is possible to lead a cow upstairs but not downstairs. See more

Eels have two hearts. See more

To escape the grip of a crocodile's jaws, push your thumbs into its eyeballs, it will let you go instantly. See more

Slugs have 4 noses. See more

Penguins are not found in the North Pole. See more

Koalas are excellent swimmers. See more

A woodpecker can peck twenty times a second. See more