A cat lover is called an Ailurophilia. Most cats had short hair until about 100 years ago, when it became fashionable to own cats and experiment with breeding. Cats have 32 muscles that control the outer ear (humans have only 6). A cat can independently rotate its ears 180 degrees. One reason that kittens sleep so much is because a growth hormone is released only during sleeping. Cats have about 130,000 hairs per square inch (20,155 hairs per square centimeter). Source: Random Facts