It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Gorillas can catch human colds and other illnesses.
205
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79