What I have learned about cats
What I have seen and learned is that it is an ever evolving process - getting to know each other and that it changes moment to moment. I have seen Graemer and Miley go at each other as though there are enemies and then within minutes, they are grooming each other.... I only intervene when things get so rough that I think they are going to kill each other. I suspect this happens while I am at work, but who will ever really know. I have never seen any blood but I have seen clumps of fur.
I would let them all work it out. Really. Certainly do it in whatever doses work for you and your pets, but the sooner the better.
I have also found that when I start yelling, it makes things worse and that it is better to try to sooth them than scold them when they are being ugly with each other.
Now remember, I have never had more than four cats in my house at one time. Seven is another story. You are in the major league my dear!
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