I feel there's a 50/50 responsibility of the dog death between the owner and shooter. Seems to me the shooter was far too hasty in making his decision to shoot but if the shooter identifies that dog as as wolf and followed 1-4 it would have led to the same result.
Not sure why you believe #4 (what is behind it part) is so important here, the other dogs and owner were down a heavily wooded embankment on the left side of the road when the dog jumped out in front of the shooter. The bullet path had no chance of injuring anything but the road beyond 100ft.
Regarding your point #1, I don't disagree with this at all, but the general public and even those with some experience would have extreme difficulty determining the difference within a few seconds on both sides. A reasonable person should understand this. For the owner of the dog to have a wolf like dog off leash without orange in the woods during deer hunting season and within a few hundred feet of a legal wolf area seems equally if not slightly more negligent.
Regarding the post you responded to, the shooter, right or wrong, (back to your # 4 point) seemingly thought he was shooting a wolf and nothing else. He was an experienced hunter and had no previous violations. First reports were the shooter had chosen to not have legal representation. Seems like every-time I post no one actually spends anytime at all to understand what is being said but just picks and chooses a few, out of context, points to use as a sound-board.
I personally spend much time in an effort to protect me, my family and property from, what I consider, predictably dangerous circumstances . No dog of mine would be caught in that same circumstance. It's like legal CCW of the brain. If my dog(s) were shot under those predictably dangerous to the dog circumstances without undertaking any measures to identify and reduce the risks I sure wouldn't blame the shooter.
This dog owner immediately played the modern socially acceptable and popular "comfort dog" card to deflect from her own personal responsibility of doing everything reasonable to provide adequate care for her pet//