Starfish haven't got brains. See more

The hairs on a polar bear are not white, but clear. They reflect light, so they appear white. See more

The starfish is one of the only animals who can turn it's stomach inside-out. See more

Snakes have one lung. See more

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

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

The Nile catfish swim upside down. 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