Cats have been the favorite pet in the United States since 1987, when the species overtook dogs, and, as of 2015, there are currently around 500 million domestic cats in the world. A group of adult cats is called a clowder, and a group of kittens is called a kindle. Cats, unlike dogs, cannot taste sweet things.
Cats are not popular pets in all countries like they are in the U.S. In Asia, for example, around four million cats are eaten each year.
Cats make more than 100 different sounds. They can't climb down a tree head-first because its claws point in the same direction. To get down from a high place, cats either have to jump or head down backwards.
Cats usually breed in warm weather so as the climate warms, the cat population increases. Multiple studies revealed that if a cat falls off a seven-story building, it has about a 30 percent chance of surviving the fall. Cats know that when they fall, they have to relax and assume the position least likely to cause injury when they land.
Calico and tortoise-shell cats are almost always female. Occasionally, a sterile calico is born. Neutering a male cat extends its life by 2 to 3 years. Cats see six times better than humans at night and a cat has 32 muscles in each ear.