Lobsters have blue blood.
476
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 will sometimes adopt orphaned baby squirrels that they’re related to.
12
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21
Lurch, a Watusi bull, had the largest horns in the world.
32