Beginning July 1, each household can raise only one pooch.The regulation appears to be part of an effort to control stray dogs in Guangzhou.Guangzhou is also preparing to host the Asian Games next year and reducing the dog population will likely mean cleaner sidewalks.Getting the dogs fixed is key to controlling the population said Grace Ge Gabriel, Asia regional director for the International Fund for Animal Welfare. Also important is regulating dog breeders and keeping fees for dog tags and vaccines affordable so people will register their animals.Many other Chinese cities, including Beijing, have long had one-dog policies.