Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
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
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
A group of kittens is called a "kindle".
10
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5