Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
Jellyfish as a species are actually older than dinosaurs and sharks.
383
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Cows can sleep standing up, but they can only dream lying down.
745