When dragonflies mate, their tails form a love heart.
22
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
Two dogs were among the Titanic survivors.
262
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Condoms were originally made of animal intestines or linen.
347
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402