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
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
In the movie 'The Wizard Of Oz', Toto the dog's salary was $125 a week, while Judy Garland’s was $500 a week.
5
A dairy cow can produce more milk when listening to music.
446
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12