Senior Devon Rex food switch: grain-free to senior formula

Switching a senior cat off grain-free food can feel counterintuitive — especially if your Devon Rex has been doing well on it — but your vet is pointing you in a sensible direction. Cats age more gracefully than dogs in some ways, but from around 10 years old they become genuinely vulnerable to kidney disease, hyperthyroidism, dental disease, and joint stiffness. A well-formulated senior diet addresses several of those risks at once, which grain-free foods often don't. To give you the most useful steer: how old is your Devon Rex exactly, have you noticed any changes in thirst, weight, or activity lately, and did your vet flag a specific concern that prompted the switch?

That context is really helpful. Slightly elevated kidney values at 10 is exactly the moment to act — it's not a crisis, but it's your window to slow things down before they become one. The key things you want in a senior kidney-supporting diet are controlled but high-quality protein, reduced phosphorus, and added omega-3s. Grain-free dry food is typically high in protein and phosphorus, which puts more load on kidneys that are already working harder. The good news on fussiness: Devon Rex cats tend to be enthusiastic eaters once they find a texture they like — they're not as stubborn as, say, a Persian. What format does Miso currently eat — dry only, or would she accept wet food too?

Wet food is actually meaningfully better for cats with early kidney concerns — the extra moisture reduces the filtration burden on the kidneys day to day. So if you can get Miso onto wet food, even partially, that's a genuine health win on top of the dietary changes. Given all of that — early kidney support, high-quality controlled protein, and the need to tempt a fussy dry-food cat — I'd recommend Hill's Science Plan Adult 7+ Youthful Vitality in the wet chicken variety. It's specifically formulated for cats from 7 years, with reduced phosphorus, boosted omega-3s, and antioxidants for kidney and cognitive support. The texture is smooth and palatable, which tends to work well for Devon Rex cats who can be sensitive to chunks. It's available in multipacks on Amazon UK, which lets you trial it without committing to a huge quantity. Transition slowly — mix a little in with her current food over 7 to 10 days to get her used to it without digestive upset.

Yes — a few things worth tracking. Watch her water intake: wet food means she'll naturally drink less from her bowl, which is fine, but make sure she's not suddenly drinking a lot more (that can signal the kidneys working harder). Check her weight monthly — senior cats can quietly lose muscle mass, and a Devon Rex is already a lean breed, so you want to catch any drop early. And keep a rough eye on litter tray output; changes in frequency or volume can be an early signal. Your vet mentioned her kidney values, so I'd ask them to recheck at the 6-month mark to see whether the dietary change is making a difference. That kind of before-and-after bloodwork is genuinely useful and gives you real confirmation you're on the right track.

Perfect plan. The slow transition is key — don't rush it even if she seems to take to it quickly, as digestive systems need time to adjust even when a cat is enthusiastic. You're in a genuinely good position: you've caught this early, you have a vet who's paying attention, and Miso is still healthy. That's the best time to make a change like this. Good luck with her.