A 42-foot sperm whale has about 7 tons of oil in it.
209
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
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