The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
The octopus does not have a blind spot.
273
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The largest earthworm on record was found in South Africa and measured 22 feet.
151