I have now up to 5 cats...how that happened, I've no clue. But my second to last cat escaped thru a window and toured the neighborhood for 5 days. The middle cat, a girl, who has not been never been a charmer and was always picking on him, was a new loving and affectionate cat while he was gone. (I suspected it was she who pushed him out the window in the first place). Well, when he returned wewere all delighted, except HER!! She is really annoyed that he's back. So much so that she lies in wait to ambush him whenever she can. He is not allowed upstairs. She hides and when he tries to come in our bedroom....well, she's on him. He has to always be looking around to see where she's hiding and what she's up to next. Will they ever get past this....or is he doomed to this treatment. Should I lock her in a room once in awhile so he has more freedom of movement.