Jumping fleas can accelerate 50 times faster than the space shuttle.
218
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Sharks, like other fish, have their reproductive organs in their chests.
248
Mosquitoes don't just bite you, they also pee on you.
11
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45