Mosquitoes don't just bite you, they also pee on you.
11
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
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
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268