Lori, I'm so glad to hear that Ripley is doing well. As for the jealousy issue, you may just need to spend more one on one time with him is a separate room. Is Ripley the alpha cat? My Storm who is also a senior kitty and the alpha cat is also very jealous and I just have to make sure to give him plenty of one on one time. I think that Storm just likes to make sure that the others know that he's still the top cat. Good luck and please continue to keep us updated.