Mosquitoes don't just bite you, they also pee on you.
11
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
Condoms were originally made of animal intestines or linen.
347
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5
In 1386, a pig in France was executed by public hanging for the murder of a child.
469