When a female leopard is ready to mate she will give a scent and rub her body on the trees to leave her smell there. Male leopards either smell the females scent or hear her call to know that she is ready to mate.

About 10% of the 100,000 thunderstorms that occur in the USA every year are classified as severe.

Oslo, Norway is the world's most expensive city. A gallon of gas costs almost $8, and it costs $1.32 to use the public restrooms.

AMAZING FACTS