Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Skittles and jellybeans contain crushed insect cocoons which are used to coat the candies to give them that special shine.
9
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
Condoms were originally made of animal intestines or linen.
347
Most of the dust underneath your bed is actually your own dead skin.
251