It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
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
Gorillas can catch human colds and other illnesses.
205
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10