There are approximately three chickens for every human on Earth.
13
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Cows can sleep standing up, but they can only dream lying down.
745
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12