One pair of rats has the potential for 15,000 descendants in a year. See more

The rat has been called the world’s most destructive mammal - other than man. See more

In ancient Egypt, killing a cat was a crime punishable by death. See more

There are more bacteria in your mouth than the human population of the U.S.A. and Canada combined. See more

The female pigeon cannot lay eggs if she is alone. In order for her ovaries to function, she must be able to see another pigeon. See more

Acorns were used as a coffee substitute during the American Civil War. See more

It took approximately 2.5 million blocks to build the Pyramid of Giza, which is one of the Great Pyramids. See more

The USA has more personal computers than the next 7 countries combined. See more

Fish that live more than 800 meters below the ocean surface don't have eyes. See more