Senior cat food with phosphorus restriction

Your vet has flagged phosphorus restriction, which tells me your Egyptian Mau's kidneys are under some strain — that's very common at 13 and absolutely manageable with the right food. Senior cats generally do better with higher protein and plenty of wet food for hydration, but when kidneys are involved, phosphorus levels become the priority, and that changes which products are actually appropriate. Can you tell me a bit more — what's the specific diagnosis or concern your vet mentioned, what are you currently feeding her, and is she eating well day to day?

That's a really important question and honestly most labels make it harder than it needs to be. Here's the thing: standard pet food labels in the UK don't have to list phosphorus as a percentage, so you often can't compare directly. What you're looking for is either a food that explicitly states a phosphorus level on pack — ideally under 0.5% in wet food on a dry matter basis — or a food formulated specifically for renal support, where the manufacturer has already done that work. For early CKD, a renal diet is the gold standard. Is she open to wet food? That would help her kidneys significantly compared to dry.

For a 13-year-old Egyptian Mau with early CKD and a vet recommendation to restrict phosphorus, I'd go with Royal Canin Veterinary Diet Renal wet food in pouches. It's formulated with controlled phosphorus levels, higher-quality protein to reduce waste load on the kidneys, and added omega-3s which support kidney function. It's specifically designed for cats at exactly this stage. Because it's a veterinary diet you don't have to decode the label — the phosphorus restriction is built in. It's available on Amazon UK in multi-packs of pouches, which makes it easy to introduce gradually alongside her current dry food. Start by mixing a small amount in or offering it separately — some cats take a week or two to accept wet food if they've only had dry.

For a CKD cat, moving fully to wet food is genuinely better — the hydration alone makes a real difference to kidney workload. That said, transition gradually over two to three weeks to avoid digestive upset and to give her time to accept the new texture. Once she's comfortably eating the Royal Canin Renal wet food, you can phase the dry out. If she ever refuses to eat entirely, go back to what she'll accept and speak to your vet — maintaining appetite and body condition is just as important as the diet quality at this stage. You're doing exactly the right thing by taking the phosphorus guidance seriously early.