Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Domestic pigs average a top speed of about 11 miles per hour.
182
Squirrels forget where they hide about half of their nuts.
698
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Jumping fleas can accelerate 50 times faster than the space shuttle.
218