Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
The head of a jellyfish is called the "Bell."
6
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2