Animals that people keep in order to eliminate loneliness or for entertainment purposes. Today pets are defined as animals and plants raised for non-economic purposes. Pets are animals and plants raised for spiritual purposes. Generally, they are raised for the purpose of eliminating loneliness or entertainment. Pets in the past are generally mammals or birds, because these animals have more developed brains and are easy to communicate with people. Nowadays, in addition to the well-known live pets, there are many virtual pets.