When dragonflies mate, their tails form a love heart.
22
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6