Cows can sleep standing up, but they can only dream lying down.
745
When cats are happy, they may squeeze their eyes shut.
10
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
In Australia, there are spiders big enough to eat snakes.
20
Whales and dolphins can't taste anything other than salt.
11
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Giant Anteaters' front legs look like a panda.
48
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12