Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
There are approximately three chickens for every human on Earth.
13
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The largest earthworm on record was found in South Africa and measured 22 feet.
151
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20