Tell them Uncle Cel disagrees. And then bash your ex in the kneecaps with a baseball bat.
But I would practice first. Make sure you can hit something really good. That kind of limp doesn't go away, and there are no fingerprints - just him and you. And he's the one with the report of shooting your dog, so you win.
But me, I've calculated things so well that I have several GPS coordinates written down where I can dispose of a body. I know that I have within me the capacity to kill - and like I said, my anger knows no boundaries when it comes to innocent animals.