Iguanas can stay under water for up to thirty minutes.

The reason why tattoos do not vanish even though we shed our skin is because the dye is injected deeper into the dermis part of the skin. It is only the epidermis that we shed.

U.S. bills are 2.61 inches wide, 6.14 inches long, and are .0043 inches thick and weigh 1 gram.

AMAZING FACTS