Cows can sleep standing up, but they can only dream lying down.
745
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
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
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Cats recognise the voice of their owner, but never evolved to care.
22
There's a rare breed of pig that looks like a sheep.
14
In Australia, there are spiders big enough to eat snakes.
20