Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Lurch, a Watusi bull, had the largest horns in the world.
32
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
Cows can sleep standing up, but they can only dream lying down.
745
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
A group of kittens is called a "kindle".
10
Dogs have been man's pet for over 14,000 years.
224