Cats often rub up against people and furniture to lay their scent and mark their territory. They do it this way, as opposed to the way dogs do it, because they have scent glands in their faces.

Adults laugh only about 15 to 100 times a day, while six-year-olds laugh an average of 300 times a day.

There is an underground mushroom in Oregon that measures 3.5 miles across.

AMAZING FACTS