Taking a medium-sized dog as an example, the average annual cost is about $800 to $1000, and the hard spending includes dog food, deworming, washing and nursing, and vaccination. In addition, the owner should also have a reserve fund, such as the budget for economic compensation after the dog bites people. If the pet is a large dog, such as Tibetan mastiff or German shepherd dog, the cost is higher and the income requirement of the owner is higher. < p > < p > according to the proposal, when people apply for pets, they must submit the dog budget and the owner’s annual income details to the government department. After examination, the government department will reply to the applicant whether it is allowed to keep pets. The basis of the proposal is that linking pet ownership with the owner’s income can reduce the phenomenon of pet abandonment, which is conducive to the protection of social environment.