Cows can sleep standing up, but they can only dream lying down.
745
Sloths take two weeks to digest their food.
243
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Giant Anteaters' front legs look like a panda.
48
Condoms were originally made of animal intestines or linen.
347