So Brody's not the only one...whew!
When one of our cats jumped on the rug we had rolled up to take outside to clean and started 'sharpening his claws' on the backing, I 'hollered' at him to stop. No biggie...Brody and the cats were basically buddies...no biggie. Except...Brody figured out the same thing...that I didn't want the cat doing that and started barking and ran over to stop the cat...which he did...only it became that the cats are often doing 'something wrong' by trying to sit on my lap, jump down to the floor, jump up on a table or sofa, breathing...sigh!
We are working now to define what the cats are allowed to do and get it 'accepted' by "Brody Standard" and even having to close the bedroom door at night so he doesn't 'police' their behavior and we can actually...err...sleep.