The elephant brain weighs about 6,000g.
274
Cows can sleep standing up, but they can only dream lying down.
745
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Female kangaroos have three vaginas.
2
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2