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
Mosquitoes don't just bite you, they also pee on you.
11
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
Sniffologists have the job of sniffing armpits.
4
Australian Graham Barker has been collecting his own belly button fluff every day since 1984 - keeping it in storage jars.
15