A chameleon's tongue is two times the length of its body.

A chimpanzee can learn to recognize itself in a mirror, but monkeys can't.

A rat can live longer without water than a camel .

A typical bed usually houses more than 6 billion dust mites.

A woodpecker can peck twenty times per a second.

Porpoises and dolphins talk to each other by squeaking, growling, moaning, and whistling. Most porpoises and dolphins navigate by using "echolocation". The largest member of the dolphin family is called an orca or killer whale.

The hippopotamus gives birth under water and nurses its young in the river as well, though the young hippos do come up ocasionally for air.

A cow gives nearly 200,000 glasses of milk in her life.