TIL that leopard slugs have penises on their heads. They're hermaphroditic, and mate by hanging from a mucus rope and entwining their bodies counter-clockwise, and exchange sperm from the penises on their heads.

https://www.theguardian.com/environment/2015/may/08/country-diary-sex-life-slugs
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1gwpho6/til_that_leopard_slugs_have_penises_on_their/