The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
The octopus does not have a blind spot.
273
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
In Australia, there are spiders big enough to eat snakes.
20