My chows seem to pull instinctively, but they'll let up (a little) if I fuss with them about it. That instinct is very handy walking up steep hills.
I find that a lot of people are fearful of my dogs, especially my black chow... her teeth look so big and white against that all black background. No dog is totally trustworthy, of course. Mine are mild but quite aloof. They figure strangers should stay strange. They won't take treats nor do they want to be petted by strangers, all very chow-like behavior.
If you put a photo of your dog in the gallery, please tell me, OK?
I forgot to say that we had blue sky... but now it's clouded up again. Brrrrrrrrrrrr 43F. Supposed to get up to 50 but I don't think so.