Condoms were originally made of animal intestines or linen.
347
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Moths are unable to fly during an earthquake.
328
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
When you shave a guinea pig it looks like a little hippo.
19
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23