Help with transition to new home & another adult cat

Keep them separate for awhile and gradually introduce them over a few weeks. Trade the rooms they stay in a few times so they can get used to each others scent. After a week or so put them in the same room for shore periods with supervision. Make sure both cats get lot of attention but don't show a preference when they are in the same room. Let the cats work it out and don't interfere unless you see fur fly. They will hiss moan and cry a bit and circle and sniff and may even stay far from each other but just ignore it. When the cats are on good behavior not attacking or defensive posturing reward them with lots of attention and tell them how good they are. Cats are smart and they'll pick up on the lay of the land real quick. Positive reinforcement of good behavior works well with most cats too. Increase the time they spend together in the same area slowly and then if things look good leave them alone for short periods of time slowly. That should work. I've don't it twice with cats. It may take 2 weeks to 6 weeks or more....cats can be stuborn but eventually they'll live with the situtation and if you are patient with them it will pay off. If things start out badly start again and go slower. I've heard with some cats is takes months. The first time it took me 6 weeks but I didn't do it properly. The last time it only two me 2 weeks and now they are the best of friends and even groom one another which is the biggest compliment one cat can give another.

HI, Keep your cat in one of your bedrooms with all of the necessities. This could be for at least two weeks. During the two weeks, do some scent transferring with the two cats, i.e., rub a towel on one and then go rub that towel on the other cat. Swap out cat beds and blankets. Since they are older cats and not used to other cats al all, this could take many weeks. If you progress very slowly, they might become friends, you never know. After a couple of weeks, you can put the resident cat in that bedroom, and let your cat have a look around the rest of the place for 30 minutes or so. Do this for a few days at the very least. Let the cats tell you when they are ready to meet for the first time. Since you will only be living there for six months, even if they do not get along, you can just keep them separated indefinitely. But I think it will work out just fine, just don't force them to be friends, let it happen on their schedule. Good luck and hope this helps