Oooo... now that's a good idea too, Aubrey. I will look into the phermone thingie. I free feed and so far have not noticed any aggression issues. There are multiple food bowls scattered around. They can certainly stay away from each other without too much effort. When Max gets a bug up his butt though he actually STALKS Dodger. So far I haven't seen a particular behaviour that is prefacing the attack. Hmm. I'll check in with the vet and have her check Max over.