ANIMALS

Penguins have an organ near the eye to filters salt from the water out of their system.

Koalas store leaves in their cheek pouches to eat them later.

Male dolphins are called "bulls", and females "cows".

Owning a cat can reduce the risk of heart attacks and strokes by more than a third, researchers found.

Snakes have flexible jaws which allow them to eat prey bigger than their head.