Mosquitoes don't just bite you, they also pee on you.
11
In Brazil, there's a species of cockroach that eats eyelashes, usually those of young children while they are asleep.
151
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
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
In 1386, a pig in France was executed by public hanging for the murder of a child.
469
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Condoms were originally made of animal intestines or linen.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