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
Sloths take two weeks to digest their food.
243
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Gorillas can catch human colds and other illnesses.
205
The octopus does not have a blind spot.
273
Condoms were originally made of animal intestines or linen.
347