Of course we have indpeendent verification of some of the details.
We know there is a dead dog.
We know who shot the dog.
We know the individual belongs to an occupation which has, in recent years, been documented shooting and killing numerous dogs.
In light of these facts, the more reliable witness, of the two, in this situation, is the non-police officer.
I have said I wasn’t there and so I don’t know. As far as I know you weren’t there, but you do know. You are determined to be right. I’m done discussing this with you.