Yuan Zhi worries about her two pets, which is why she decided to stop walking them after hearing that Beijing police launched a citywide crackdown on large and dangerous dogs on Wednesday.

A rule published by the Beijing Municipal Public Security Bureau on June 2 said dogs 35 cm in height or taller, or that are one of 41 breeds identified as violent such as bulldogs and collies, will be banned in designated areas, including central districts and some rural regions across the capital.

District governments and local police have the right to decide where dogs can and cannot be raised, and the city rule is not as simple as saying that huge and dangerous dogs are banned within the Fifth Ring Road.