Mosquitoes don't just bite you, they also pee on you.
11
An average person’s yearly fast food intake will contain 12 pubic hairs.
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In Brazil, there's a species of cockroach that eats eyelashes, usually those of young children while they are asleep.
151
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6