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
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5
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Condoms were originally made of animal intestines or linen.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
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6