so I've had Isis and Saki for over a year now, and they have not decided who's top cat in this house. They co-habitate most of the time, but almost every morning, when cats are let out of their respective rooms (saki sleeps w/my sister, Isis with my husband and me), Isis will go and try to bite Saki's neck, and then chases her, as well as at dinner time (wet food, they're crazy for it). there are some nights when we have to separate them because Saki is cornering Isis and Isis is growling and hissing like crazy, and others where Saki is caught grooming Isis, or vice versa. I just don't get it. They'll even sleep on the same cat tree or the couch, near each other, but not touching. I won't give up either of them, since, like I mentioned above, they get along for the most part, but will this ever progress to a peaceful existence? (note, these are my first cats ever, so I don't know if this is normal behavior for cats) thanks in advance!