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
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The oldest recorded elephant lived for 82 years.
213
Condoms were originally made of animal intestines or linen.
347
Cows can sleep standing up, but they can only dream lying down.
745