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
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
When you shave a guinea pig it looks like a little hippo.
19