Sharks have been on the planet longer than trees.
14
Human birth control pills work on gorillas.
52
Squirrels forget where they hide about half of their nuts.
698
The head of a jellyfish is called the "Bell."
6
Rattlesnake mating sessions have been known to last more than 22 hours.
232
The first two years of a dog's life are equal to 24 human years.
25
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2