I just got a new kitten, Junior (2 months), and my Older cat, Patches (6 months) keeps hissing at him. We just got the new kitten the other night and they have been constantly hissing. We haven't let them get to close to each other. I am worried Patches will never accept the new one. She hasn't liked any other cats either. My friend came over with one of her cats and she wanted nothing to do with the other one. What am I to do?