It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
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
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
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
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A group of kittens is called a "kindle".
10