the dog is a good and friendly to people but you can use it to do something for you.

as like kidnap /robbery/killing operation as like movie show.

why to use  human being to replace the animal?

some people will agree to eat the dog meat in the winter if the dog is not a good or friendly to people.

the rich people like to rear a lot dog and to let dogs to service what they want for fun but you can do a lot davil case to use the dog if you want to.