Only 3% of bird species have penises.
0
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
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79