[Teresiana]

I know you'd rather not separate the two, but in my experience separation/distraction can really help. My two older pups can get pretty feisty with each other. Instead of waiting for a fight to break out, I say "NO" & pull them away from each other when I see any signals of aggression. I put one in another room...I don't close any doors or give them a "time out". I just separate the distance between them. It gives them just enough time to relax so that the unwanted behavior won't escalate. They've become so used to it that most of the time all I have to do is say "NO" and give them "the look". They'll back away when they see my signal.