If you are in China, you will definitely encounter a smart squad of dogs in the service of the police. Subject to rigorous selection and training that even allows them to eat on a schedule, these dogs become an indispensable tool in law enforcement.
Dogs always help the police in cases where they cannot be done without them. They are able to search for people, identify weapons and drugs, and in the right situations they can turn the lights on or off.
In the photo above you can see what this Chinese brigade looks like today. And in the photo below is a Finnish squad of police dogs in 1940. Amazing photos!