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
Your ears secrete more earwax when you are afraid than when you aren't.
229
Sniffologists have the job of sniffing armpits.
4
In Brazil, there's a species of cockroach that eats eyelashes, usually those of young children while they are asleep.
151
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10