A pet, one of the most popular (along with a dog) "companion animals". From the point of view of scientific systematics, a domestic cat is a mammal of the feline family of the predatory order. A cat is a social animal that uses a wide range of audio signals for communication, as well as pheromones and body movements. Currently, there are about 600 million domestic cats in the world, and about 200 breeds have been bred.