Most of the dust underneath your bed is actually your own dead skin.
251
Sniffologists have the job of sniffing armpits.
4
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
Condoms were originally made of animal intestines or linen.
347