In Brazil, there's a species of cockroach that eats eyelashes, usually those of young children while they are asleep.
151
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
Most of the dust underneath your bed is actually your own dead skin.
251
Your ears secrete more earwax when you are afraid than when you aren't.
229
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Condoms were originally made of animal intestines or linen.
347