Cows can sleep standing up, but they can only dream lying down.
745
Lobsters have blue blood.
476
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Dogs have been man's pet for over 14,000 years.
224
Drivers kill more deer than hunters do.
660
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12