I took my dog, a chow mix, out to the river (long time ago now).
I was so surprised to see him standing over a shallow part of a stream, to suddenly submerge his snout into the stream and come back up with a fish in mouth, tilt back his head and swallow it. Looked just like those bears that get a salmon and eat one.
It must have been a real surprise seeing your Chow Chow Down.
(good story!)
Your dog is an authentic chow hound.