During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Squirrels forget where they hide about half of their nuts.
698
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
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