Merlin is starting to get affectionate with 'his' humans, although he hides behind the sofa when other people come in. He is, despite Pet Remedy, very aggressive to my other cats, while we are in we are leaving the front room and dining room doors open, the others have come in for a sniff, but he has attacked Bob and bowled her out of the room, she did give as good as she got even with the size difference, no blood was spilt or even fur ripped out, it was mostly noise. The only reason he didn't go for Emo this morning was because I held on to him. Any suggestions besides time and supervised contact? He has only been here eight days so I do realise it is very early days.