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
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Mosquitoes don't just bite you, they also pee on you.
11
Condoms were originally made of animal intestines or linen.
347
In 1386, a pig in France was executed by public hanging for the murder of a child.
469
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5