Cows can sleep standing up, but they can only dream lying down.
745
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Sloths take two weeks to digest their food.
243
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
Female kangaroos have three vaginas.
2