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
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
A cow produces around 200,000 glasses of milk in her lifetime.
373
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13