Cows can sleep standing up, but they can only dream lying down.
745
Bats sleep 18-20 hours per day.
5
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
A lion in the wild usually makes no more than twenty kills a year.
186
A cow produces around 200,000 glasses of milk in her lifetime.
373