Crocodiles swallow stones to help them dive deeper. See more

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

Venus is the only planet in the solar system to spin backwards. See more

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

Coca-Cola was originally green. See more

The Nile catfish swim upside down. See more

Butterflies taste with their feet. See more

Bubble gum and fairy floss were invented by dentists. See more

Ancient Egyptians slept on pillows made of stone! See more