Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
When dragonflies mate, their tails form a love heart.
22
Cats recognise the voice of their owner, but never evolved to care.
22
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
Condoms were originally made of animal intestines or linen.
347
Sharks, like other fish, have their reproductive organs in their chests.
248