Someone at work is having to move but can't take her 12 year old silver tom cat (don't know what breed it is) called Alfie, she is buying her dream home (personally any house that couldn't take my cats isn't a dream home but never mind. Now If he comes to me I will put him in the back room of the house with a litter box and access to the back porch. Then he and the other cats can see each other spit snarl and all that lot without touching and hurting anyone. If and when that stops I was thinking of letting him in the rest of the house in stages starting with being in the sitting room in a dog cage so he can see and touch the others but still be safe. Then if that works slowly let him mix with the others. Does this sound about right for introducing another cat into the house. Because if its me or being put down he is coming home with me.