This is a specific conversation about Senior cat food — what they need as they age — ask about yours and get one honest answer for your exact situation.
inparticular.ai
A 15-year-old Siamese who's looking a bit lean — that's exactly the situation where food choice really matters. Senior cats often need more protein than younger cats, not less, and wet food is usually the right format for hydration and digestibility. Calorie density matters too when a cat is underweight, but the safest approach depends on what else is going on health-wise. How old is your cat exactly, do they have any diagnosed conditions like kidney disease or hyperthyroidism, and what are you currently feeding them?
She's 15, a Siamese. The vet hasn't flagged kidney disease — bloodwork was fine six months ago. She was diagnosed with hyperthyroidism last year and is on medication for it, which has helped, but she's still quite lean. Currently on a dry food, a senior variety, but she doesn't seem that interested in it.
inparticular.ai
That makes a lot of sense. Hyperthyroidism burns through muscle mass and calories even when it's being managed, so rebuilding condition takes time and the right fuel. Dry food is often the wrong tool here — it's less palatable for many cats, lower in moisture, and calorie-per-bite it can be less efficient for a cat who's already eating reluctantly. Since her kidneys are currently clear, you're not in the territory of needing to limit phosphorus aggressively, which gives you more flexibility. Can I ask — does she have any food texture preferences, or has she shown interest in wet food before?
She used to eat wet food when she was younger and seemed to enjoy it. I moved her to dry because it was more convenient, but I'm happy to switch back if it'll help her gain some weight.
inparticular.ai
Switching back is absolutely the right call for her situation. My recommendation is Animonda Carny Adult — it's a chunky wet food with a very high meat content, typically around 70% or more, and it's genuinely calorie-dense compared to most supermarket wet foods. It comes in a range of proteins including beef, chicken, and game, which is useful because Siamese can be picky and having variety helps maintain interest. It's well-tolerated by older cats, reasonably priced for the quality, and widely available on Amazon UK in multipacks. Given she's on thyroid medication and has a history of weight loss, I'd still suggest a vet check-in after a month or two to see how she's responding — but nutritionally, this is a solid fit.
That sounds good. How much should I be feeding her to help her gain weight without overdoing it?
inparticular.ai
For a lean senior Siamese — probably around 3 to 4 kg if she's underweight — I'd aim for roughly 200 to 250 grams of wet food per day split across two or three meals, and watch her body condition over two to four weeks. If she's eating well and gaining slowly, you're on the right track. If she's leaving food or her weight isn't shifting, those are signals worth checking with your vet, since managed hyperthyroidism can still affect absorption. The goal is steady, gradual weight gain rather than loading her up — older cats do better with consistent, moderate increases.
Really helpful, thank you. I'll order a multipack and see how she gets on.
inparticular.ai
Good luck with her — at 15 with managed hyperthyroidism and clean kidney bloods, she's actually in a good position to regain condition with the right food. Animonda Carny is a good starting point, and if she develops a strong preference for one protein variety, sticking with that consistency helps too. Hope she's back to a healthier weight soon.
