In the past, pets simply referred to animals that people had raised to eliminate loneliness or for entertainment purposes. Today's pets are defined as animals and plants that are raised for non-economic purposes. Pets are animals and plants that are raised for spiritual purposes. Generally, in order to eliminate loneliness or entertainment, the former pets are generally mammals or avian animals, because these animals have relatively developed brains and are easy to communicate with people. Today, in addition to the well-known live pets, there are many virtual pets. Among all animal pets, dogs and cats are popular, and birds, fish, worms, hamsters, rabbits and the like are more widely used. If the pet is burned with cold water, the cooling time of different parts is different. If it is the lower abdomen or the leg, it can be cooled in the water tank for more than 5 minutes. If the range of burns is small, apply a cloth dampened with ice water, wipe off the water with a dry cloth and apply a cloth.