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
Condoms were originally made of animal intestines or linen.
347
Cockroaches can live for 9 days after their head has been cut off.
140
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
Within three days of death, the enzymes that once digested your food begin to eat you.
22