Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
The cat brain weighs about 30g.
167
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Sheep, goats, octopuses, and toads have rectangular pupils.
7