Senior nutrition for a 7-year-old Siberian cat

Smart thinking starting this conversation now — Siberians are a large, slow-maturing breed, and that size means their kidneys and joints can start showing age-related stress a little earlier than people expect. As cats move into their senior years, the key nutritional shifts are usually higher protein to maintain muscle mass (not lower, despite the old advice), reduced phosphorus to protect kidney function, and more wet food to keep hydration up. But the right approach really depends on what's going on with your individual cat. How old is your Siberian exactly, do they have any health conditions or vet-flagged concerns, and what are you currently feeding them?

Great that she's in good shape at 7 — and you're right to think ahead. At her size, the kidney and joint load is real over time. The main thing I'd want to shift at this stage is adding a significant wet food component, even if you keep some dry in the mix. Purina One Adult is decent, but it's not optimised for the senior nutritional profile she's starting to need — specifically that lower phosphorus and higher protein from quality meat sources. Can I ask: is she a good drinker, or does she tend to ignore the water bowl?

That settles it — wet food isn't optional for her, it's genuinely important. Cats who don't drink well are almost entirely dependent on food moisture for hydration, and over years that puts real strain on the kidneys. For a healthy 7-year-old Siberian where you're being proactive, I'd recommend moving to Hill's Science Plan Adult 7+ Sterilised Cat food with Tuna in Gravy pouches as your primary food. It's formulated specifically for cats from 7 onwards, with controlled phosphorus levels, high-quality protein, and the wet format gives her the hydration she's clearly not getting from water. It's not a prescription diet, so you don't need a vet referral — it's the right step for a healthy cat this age. I'd aim for two pouches a day and reduce the dry food to a small top-up rather than the main event.

More of a build-good-habits-now thing rather than a crisis concern. Her kidneys are almost certainly fine at 7 with a clean bill of health — but kidneys don't recover well once they're damaged, so the strategy is to reduce the load before there's a problem rather than scrambling after a diagnosis. High-phosphorus diets over years are one of the more consistent contributors to feline kidney disease. Switching to a food with controlled phosphorus at 7 is genuinely preventive, not reactive. You're doing exactly the right thing.

Good call. One last tip: transition gradually over about 10 days — mix a little of the new food in with what she's used to and increase the ratio slowly. Cats can be stubborn about texture changes, and a gradual switch means she's far less likely to just refuse it outright. Given she's healthy and you're making this change early, she should take to it well.