Sorry to hear that about you chow, Not the first time Ive seen it in print about them attacking an owner. Aren’t chow-chows chinese guard dogs? Breed to bite?
We had a Chow-German Shepard mix. She was our guard dog. She seemed to have a good sense of what to do when. She was very protective of the family and would not hesitated to bite if necessary.
Also had a Newfoundland. Dumb as a post but sweet as could be. They were a good team. Ya know, I’m not even sure our Newfie knew his name.