It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
The elephant brain weighs about 6,000g.
274
Sharks, like other fish, have their reproductive organs in their chests.
248
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2