I don’t see what that has to do with this story.
There is no mention of the dog attacking; and no mention really of the perp deliberately shooting it. According to the article, he was shooting at the police.
You make laws re: dogs as officers for every case, not just this one. I doubt there was any intent by the perp to shoot the dog. Why isn’t it enough to hit him with one charge of attempted murder for each officer there? Again dogs aren’t people. They used to euthanize police dogs at retirement. They can be problematic, behaviorally. They aren’t all Lassie.