This is a specific conversation about Senior cat care — what changes and what helps — ask about yours and get one honest answer for your exact situation.
inparticular.ai
A 12-year-old Sphynx sharing a home with another senior cat — that's a lovely setup, but it does mean you're managing two ageing cats at once, which takes a bit of coordination. Sphynxes in particular can be prone to hypertrophic cardiomyopathy as they get older, and both cats are at the age where kidney function, thyroid levels, and dental health are worth keeping a close eye on. Cats generally age more quietly than dogs — they hide discomfort well — so small changes in eating, drinking, or activity are worth noticing. How old is the other cat, and are either of them dealing with any known health issues right now? And what's prompted you to look at their diet specifically?
The other cat is 14. Neither has a formal diagnosis yet but the vet mentioned at the last check that their kidneys could do with some support. They're both still eating well but I want to get ahead of it. The main problem is they eat from the same bowl and I can't always separate them.
inparticular.ai
That's exactly the right instinct — supporting kidney function before there's a problem is much easier than managing decline after it starts. The good news here is that because both cats need the same thing, you don't have to worry about one eating the other's food. You want a diet that's moderate in high-quality protein, low in phosphorus, and supports urinary and kidney health — without being a prescription renal diet, which is too restrictive for cats who don't yet have diagnosed kidney disease. What are they currently eating — wet, dry, or a mix?
Mostly dry with some wet in the evening. They both seem to prefer the dry honestly.
inparticular.ai
Understood. I'd actually nudge you gently toward increasing the wet food over time — hydration matters a lot for kidney health, and dry food alone makes it harder for kidneys to stay flushed. But for the dry component, the product I'd point you to is Royal Canin Ageing 12+. It's formulated specifically for cats over 12, with controlled phosphorus levels to ease the kidney workload, adapted protein levels that are easy to digest without overloading the kidneys, and support for joint and dental health too. Since both your cats are 12 or older, it works for both of them from the same bag — no juggling. It's widely available on Amazon UK in both 2kg and 4kg bags.
That sounds ideal. Should I be worried about the Sphynx specifically — I know they can have heart issues.
inparticular.ai
Yes, it's worth being aware of. Hypertrophic cardiomyopathy — HCM — is genuinely more common in Sphynxes than in most other breeds, and at 12 it's worth asking your vet to listen carefully to the heart at each annual check, ideally with an echocardiogram every couple of years if you can access it. Diet won't prevent HCM, but keeping weight stable and not overfeeding helps reduce cardiac strain. The Royal Canin Ageing 12+ is calorie-controlled too, which is useful since older cats can either lose weight or gain it depending on their metabolism. The wet food in the evening is actually a nice way to give the Sphynx — and the 14-year-old — some extra hydration without a battle.
Perfect. I'll order the 4kg bag and look at adding more wet food gradually. Thank you.
inparticular.ai
That's a solid plan. Transition slowly — about a week of mixing old and new food helps avoid any digestive upset, especially in older cats whose guts are a bit less forgiving. Keep an eye on water intake too; a cat fountain can genuinely increase how much both cats drink if they're not big water bowl drinkers. And do mention the kidney support conversation to your vet at the next visit so they can baseline bloodwork — it gives you something to compare against if anything changes later.
