Hey all! Recently I rescued a 5 week old (now almost 3 months) male kitten from where he had fallen and lost his mother. We also have a 12 year old male at home, who has been mostly the lone king of the house for his whole life. We kept kitten and cat separate for about 3-4 weeks, only occasionally seeing each other, and they were fine. Once the kitten got his shots we released him and it's been a few weeks. Kitten harasses the senior cat a little, but nothing too dramatic (they're definitely not cuddling yet thought). Around a week ago, our older cat went in for a routine check up. We changed some meds and foods on him as a result of his tests, and for the past few days he has seemed severely depressed. Drinking very little water, eating very little food, dripping water from his chin-- not at all his usually very bright and loving self. Could this be a result of feeling replaced by the kitten? Or did we just change too many things in his life at once? He seemed fine for the first weeks when we let the kitten out but I'm afraid it's manifesting a little later. Will try to rehome the kitten if this keeps upsetting our cat but I don't want to make a rash decision!