To find out if a watermelon is ripe, knock it, and if it sounds hollow then it is ripe.
84
Gorillas can catch human colds and other illnesses.
205
Male monkeys lose the hair on their heads in the same way men do.
41
George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
7
Crocodile babies don't have sex chromosomes; the temperature at which the egg develops determines gender.
45
A male baboon can kill a leopard.
38
In just about every species of mammal, the female lives longer than the male.
43

