The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27