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
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
Cockroaches can live for 9 days after their head has been cut off.
140
Condoms were originally made of animal intestines or linen.
347
Your ears secrete more earwax when you are afraid than when you aren't.
229
Sniffologists have the job of sniffing armpits.
4