
I have Chows and I have often noticed that other dogs don't seem to like them.
Small dogs lunge and snap and larger dogs slope away heads down.
I have a smooth coat and a rough and previously a smooth coat but the reaction has been the same for all my boys. I think they don't display 'normal' dog body language, although very dog friendly they approach in a very proud manner, head held very high, on tippy toes. I think other dogs have a hard time reading them.
It's not a size issue because I also have a Doberman that other dogs are happy to approach even when she grumbles at them for too much sniffing of the rear end.
Of course Chows don't have the normal doggy odour which might be confusing as well.