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
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Sheep, goats, octopuses, and toads have rectangular pupils.
7
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Dolphins have names for one another.
18
Parrot parents "name" their children with a signature call.
112
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40