Pets (pets) refer to creatures that people raise for spiritual purposes, not for economic purposes. Traditional pets refer to animals in the mammal or avian class, which are kept for fun and companionship. Pets in real life include fish, crawling, amphibians, insects, and even plants, used for viewing, companionship, and soothing people's mental pressure. With the development of the times, the range of pets is very wide, including animals, plants, virtual pets, electronic pets and so on. But the laws of most countries still restrict pets to animals. Keeping pets as an opportunity for humans to get close to nature can meet human psychological needs and is a very healthy and normal hobby.