The South American degu, a small rodent, uses urine to mark its passageways. Its urine reflects ultraviolet light, which the degu can see.

The world's largest book, "Bhutan: A Visual Odyssey" is in a Chicago public library. The book measures 5 feet tall by 7 feet wide when open. It weighs 133 pounds.

The original name of Nashville, Tennessee was Big Salt Lick.

A M A Z I N G   F A C T S