You can't kill yourself by holding your breath. See more

A flea can jump 350 times its own body length. See more

A mole can dig about 92 metres in 1 night. See more

The strongest muscle in the body is the tongue. See more

A giraffe can clean its ears with its 21-inch tongue. See more

Adolf Hitler had only one testicle. See more

Members of the armed forces and the police cannot vote in the Dominican Republic. See more

A boeing 747's wingspan is longer than the Wright brothers' first flight (120 feet/36 meters). See more

If you take a pencil, you can draw a 50 kilometer (31 mile) long line. See more