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
Poon Lim survived 133 days alone on a raft at sea by fishing, drinking bird blood, and killing a shark with a jug of water.
21
Cockroaches can live for 9 days after their head has been cut off.
140
Most of the dust underneath your bed is actually your own dead skin.
251
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59
In Brazil, there's a species of cockroach that eats eyelashes, usually those of young children while they are asleep.
151