The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
The largest earthworm on record was found in South Africa and measured 22 feet.
151
When dragonflies mate, their tails form a love heart.
22
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Denmark has twice as many pigs as there are people.
66