Dolphins communicate with each other by clicking, whistling and other sounds.

More than 3000 years ago children played with circular hoops made with grape vines. This toy was swung around the waist. Years later this toy was made by company called Wham-O and the Hula-Hoop was invented in 1958.

It can take up to a month for a rattlesnake to re-supply its venom.

AMAZING FACTS