Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
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
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
When cats are happy, they may squeeze their eyes shut.
10
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1