When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
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
The world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
8
Penguins have a gland above their eye that turns saltwater into freshwater.
12