Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Dolphins have names for one another.
18
There's a rare breed of pig that looks like a sheep.
14
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The male seahorse carries babies and 'gives birth' to them instead of the female.
7