First of all I'm sorry your dog was killed, they were wrong for shooting and killing your dog but
you were just as wrong for shooting another person even if as you say, it was "just through the knee".
next time you or anyone else gets into this situation just make the phone call and let the proper authorities handle it.
Good Luck in court.
Democracy is two wolves and a lamb voting on what to have for lunch.
Liberty is a well-armed lamb contesting the outcome of the vote.