When dragonflies mate, their tails form a love heart.
22
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Condoms were originally made of animal intestines or linen.
347
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Two dogs were among the Titanic survivors.
262
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23