Thanks for your comments, emrldsky. This introduction has been the worst we've ever experienced. I've never had actual physical fighting before & chasing/stalking. As I've always done, introductions were done very slowly. Murphy was so quiet & shy when he first came (which is normal). He has become more confident and has tried being a bully with the other cats. He would try to chase the 3 girls. Didn't work. Chester would growl at him and would run. Murphy would chase him. Finally, I got angry and chased and scolded Murphy after he chased Chester. Immediately, that problem got better. Murphy bonded with the dog right away & they got along great. Now Murphy is nice to the dog sometimes and sometimes chases him (not playing). The fighting at night between Chester & Murphy has stopped for now, but Murphy howls as soon as we turn out the light. After I say, "Murphy, it's okay" he stops but sometimes starts again during the night. One night I heard him scratching on kitchen counter & caught him spraying on my microwave. Big Yuk! Someone (not blaming Murphy) is also spraying on the counter in our kitchette downstairs in the family room. Feliway is not working. Who knows what tomorrow will bring, but we'll see -- it's never a dull moment here. I wonder if Murphy is jealous of the other cats. When we're in the living room at night, he wants constant attention.