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
Sheep, goats, octopuses, and toads have rectangular pupils.
7
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Cows can sleep standing up, but they can only dream lying down.
745
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268