Cheetahs are the only big cat that cannot roar. They can purr though and usually purr most loudly when they are grooming or sitting near other cheetahs.

When Nylons first went on sale in the United States in 1940, four million pairs were sold in only a few days.

Spiny lobsters migrate in groups of 50 or more, forming a conga line on the ocean floor.

AMAZING FACTS