Dogs have been man's pet for over 14,000 years.
224
Female kangaroos have three vaginas.
2
A blue whale's aorta (the main blood vessel) is large enough for a human to crawl through.
52
Billy goats urinate on their own heads to smell more attractive to females.
31
The Giant South African Earthworm can grow up to 22 feet long and 1 inch in thick.
37
The head of a jellyfish is called the "Bell."
6
There are some species of snails that are extremely venomous.
72