The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The head of a jellyfish is called the "Bell."
6
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Sharks, like other fish, have their reproductive organs in their chests.
248
Alligators can live up to 100 years.
337