I have a 17 yr old pretty much blind Siamese who has been my only cat since 6 wks old. My "neighbor" (I use that term loosely, what a scumbag he is) had to move and couldn't (or wouldn't ) take his beautiful TINY 3 yr old Tortie with him, so I rescued her. I don't want to give her up, and currently have them separated in different parts of the house. He had NEVER taken her to the vet! So I took her yesterday to get rid of the fleas! and get all the shots she never had, ever. Of course the jerk didn't bother to spay her either, so by month's end that will happen too. She is a wonderful tempered girl, but my old Siamese is pretty feisty still, and I can see the issues being more on his end than on hers. She lived with both dogs and cats, so I think she would be the easier one here. I have never had to introduce old to new cat ever before, so if anyone can help me out, please do so. Thanks, Barbara