Take a tour of Unusual Facts About Cats in Miami, United States - part of the World's Greatest Attractions travel video series by GeoBeats. Cats are popular pets, and have been since they were first domesticated by the Egyptians in roughly 3000 B.C. Though it seems like a cute display of affection, when a cat rubs against you, it is marking you with it scent in order to claim you. It's possible to distinguish any cat from all others by the unique pattern of ridges on their noses. Most cats are sleeping or napping for about 65 percent of their entire lives, though the napping sleep is relatively light. Though kittens are born with a blue eye color, that will change as the animal grows older and matures.