Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Dolphins have names for one another.
18
A cow produces around 200,000 glasses of milk in her lifetime.
373
When you shave a guinea pig it looks like a little hippo.
19