The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A lion in the wild usually makes no more than twenty kills a year.
186