It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17