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 cat whose vet has flagged hydration as a priority is exactly the right candidate for a high-quality wet food diet — and variety can actually be a real advantage at this age, since older cats are prone to developing strong food aversions. Senior cats generally need more protein than adults, not less, along with reduced phosphorus to protect the kidneys. The trick is finding something they'll eat consistently and that delivers enough moisture. Can you tell me what you're currently feeding, and does your cat have any diagnosed conditions like kidney disease or hyperthyroidism?
She's 15, domestic shorthair, no specific diagnosis yet but the vet mentioned her kidney values are creeping up. She's been on dry food most of her life but has started drinking less water. Currently on a senior dry kibble — can't remember the brand. Vet just said switch to wet and keep it varied so she doesn't go off one flavour.
inparticular.ai
That's a really common picture — kidneys starting to show early stress, lower water intake, and a history of dry food. Switching to wet is the single best thing you can do right now, and your vet's instinct about variety is spot on. At 15, cats can suddenly decide they hate a food they've eaten for months, so having a rotation prevents that. What's her appetite like generally — eating well, or starting to get picky?
She's still eating okay but she does turn her nose up at things more than she used to. She seems to prefer fish over chicken when she gets the chance.
inparticular.ai
Perfect — that tells me a lot. For a 15-year-old with early kidney concerns, a fish preference, and a need for variety, I'd go with Animonda Carny Senior wet food in the mixed variety pack. It's a German brand with a strong reputation, high meat content (around 70%), and the senior range is specifically formulated with reduced phosphorus and higher protein — exactly what the kidneys need at this stage. The variety packs rotate fish and meat flavours, which means you can keep her interested without committing to a single recipe. It comes in 85g pouches so nothing goes stale, and it's widely available on Amazon UK. One thing to do: transition slowly over 7–10 days mixing it with the dry food, so her digestive system adjusts. Her kidneys will thank you for the extra moisture almost immediately.
That sounds really good actually. How much wet food should a cat her age be eating per day?
inparticular.ai
For a typical adult cat around 4kg, roughly 3–4 of those 85g pouches per day covers their calorie needs on wet food alone. But at 15, weight can be tricky — older cats sometimes lose muscle mass and actually need more calories, not fewer. If she's on the lean side, lean into the higher end. If she's still carrying good weight, 3 pouches is fine. Split it into at least two meals so she's not going too long between feeds — older cats do better with smaller, more frequent meals. And keep fresh water out anyway; some cats will still drink alongside wet food, especially if you use a fountain.
Great, I'll order the variety pack. Should I completely cut out dry food?
inparticular.ai
Given the kidney situation, yes — moving fully to wet is the right call. Dry food pulls moisture from the body during digestion, which is the last thing you want when the kidneys are under strain. If she absolutely protests and won't eat without some dry food mixed in during the transition, that's fine short-term, but the goal is wet-only. Once she's been on it a few weeks you'll likely notice she's more hydrated, and her next kidney bloodwork should reflect that too. Your vet will be pleased.
