The head of a jellyfish is called the "Bell."
6
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
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
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
The cat brain weighs about 30g.
167
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11