Previously, Chow Chows were used as guard dogs, guard dogs or herding dogs, but nowadays they are bred more for decorative purposes or as a companion.
With outward composure, the Chow-Chow does not tolerate strangers on its territory and is quite capable of aggression, it can get involved in a fight with other dogs.
The chow will rush to protect the owner without hesitation, even if he was not trained in security work. He just loves you and is ready to give his life for it.