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
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
In Brazil, there's a species of cockroach that eats eyelashes, usually those of young children while they are asleep.
151
Australian Graham Barker has been collecting his own belly button fluff every day since 1984 - keeping it in storage jars.
15
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
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