p.s. we did have an overlap with the two new cats and my old cat (who was 17 going on 18) and the first week was a little stressful, but the old gal was really my baby and the newer ones were DD's, so it did actually work out okay. My dear oldie passed away about 4 months or so afterward. She had had a lifelong feline companion who had died a couple of years before and I never got her a new friend. I think she did like the companionship of the other felines in the house during her last months. They all ended up being pretty nice to each other.