When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
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 1949, an official boxing match between a bear and a man was held. The bear won.
41
Squirrels forget where they hide about half of their nuts.
698
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
The cat brain weighs about 30g.
167