The elephant brain weighs about 6,000g.
274
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
When cats are happy, they may squeeze their eyes shut.
10
In Australia, there are spiders big enough to eat snakes.
20
A cow produces around 200,000 glasses of milk in her lifetime.
373
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13