Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
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
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9