Senior cat stressed by new kitten? Here's what helps

A 14-year-old Maine Coon going off food after a kitten joins the house is really common — and really worth taking seriously. Senior cats handle stress poorly compared to younger ones, and at his age the eating-less part is the bit I'd focus on first, because it can spiral quickly. Cats age more gracefully than dogs in some ways, but they're prone to kidney disease, hyperthyroidism, dental disease, and arthritis — all of which can be masked or worsened by stress. Can you tell me a bit more: how long ago did the kitten arrive, and is your Maine Coon eating nothing or just eating less? And do you know if he's had a vet check recently?

That timeline makes sense — three weeks in is often when the novelty wears off for the resident cat and the tension settles in as a permanent reality rather than a temporary disruption. The hiding and reduced appetite are classic stress signals, not illness signals at this stage, which is reassuring given his recent clean bill of health. The key thing with a senior cat in this situation is that you want to reduce ambient tension in the shared space rather than relying purely on introduction protocols — he's 14, he's set in his ways, and he's not going to suddenly enjoy the kitten. Before I suggest anything: are they sharing a feeding area, and does the kitten actively chase or bother him, or is it more that he just doesn't want to be in the same room?

Good — no fighting is a solid baseline, and hissing is your Maine Coon setting appropriate limits, which is healthy. The separate feeding ends is sensible but I'd actually move them to completely different rooms if you can, even temporarily. The eating-less problem is partly about feeling safe enough to be vulnerable — and eating is a vulnerable act for a cat. Now, for the environmental stress piece, the one product I'd point you to directly is the Feliway Friends diffuser. It's specifically designed for multi-cat tension rather than general anxiety — it uses a synthetic version of the cat appeasing pheromone, which is distinct from the single-cat Feliway Classic. You plug it in to the room your Maine Coon uses most, and it works on the background stress rather than the kitten behaviour itself. It won't make them friends, but it tends to take the edge off so the senior cat feels less under siege in his own home. Results usually show within one to two weeks.

Yes — a few practical things that cost nothing. First, give your Maine Coon at least one elevated resting spot the kitten genuinely can't reach — height is safety to a cat and it lets him observe without feeling exposed. Second, feed him in a completely separate room with the door shut, even if it feels like overkill; he needs to eat without scanning for the kitten. Third, give him some structured one-on-one time each day in a kitten-free room — it sounds obvious but it's easy to let it slip. The Feliway Friends diffuser handles the ambient chemistry; the rest is about making sure he has spaces and routines that are entirely his. If his food intake hasn't improved meaningfully in the next ten to fourteen days, I'd book a vet appointment — not because something is necessarily wrong, but because prolonged reduced eating in a senior cat can affect kidney function even when baseline levels were fine six months ago.

That sounds like the right move. The feeding change alone sometimes produces a visible shift within a few days — cats are very sensitive to whether eating feels safe. The diffuser takes a little longer but the combination tends to work well. Keep an eye on his weight if you can; Maine Coons are big cats so it can be easy to miss gradual loss. Hope he settles — at 14 he's earned a peaceful house.