Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16
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
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
The colossal squid has the largest eyes in the world.
4