Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
In Australia, there are spiders big enough to eat snakes.
20
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The cat brain weighs about 30g.
167
The colossal squid has the largest eyes in the world.
4
Condoms were originally made of animal intestines or linen.
347