Senior cat sharing a bowl with younger cat

Sharing a bowl between a 10-year-old Himalayan and a younger Persian is actually a really common problem — and it matters more than people realise, because senior cats typically need higher protein, reduced phosphorus to protect their kidneys, and more wet food for hydration. What's right for your Himalayan could genuinely be wrong for the younger cat, and vice versa. Before I point you in the right direction: does your Himalayan have any diagnosed health conditions — kidney issues, dental problems, anything like that? And what are you currently feeding them both?

That kidney flag is really important — it changes things significantly. Dry food is the worst option for a cat with early kidney stress because it provides almost no moisture, and Himalayans are already prone to kidney and urinary issues. Sharing a bowl also means you have no idea how much each cat is actually eating, which makes it harder to manage his condition. Can I ask — do you feed them at set mealtimes or is the bowl topped up throughout the day? And is your younger Persian in good health?

Okay, free-feeding is going to make separation tricky but it's absolutely doable. Here's what I'd recommend: switch your Himalayan to Royal Canin Renal wet food pouches. It's specifically formulated with reduced phosphorus and controlled protein quality to support cats with kidney stress — exactly what your vet would likely suggest at his next appointment. It also provides the hydration he needs, which dry food simply doesn't. For your 3-year-old Persian, you can keep her on the Royal Canin Persian dry or add some standard adult wet food — she doesn't need the renal formula and shouldn't have it long-term as her only food. The practical fix is scheduled mealtimes twice a day: put them in separate rooms, give your Himalayan his renal pouches, give her the regular food, pick up both bowls after 20 minutes. It sounds like a change but cats adapt quickly and it gives you real control over his intake.

Occasional small amounts won't harm a healthy adult cat — the reduced phosphorus isn't dangerous, it's just not nutritionally complete as a sole diet for a cat with normal kidney function over the long term. The bigger risk is your Himalayan eating her regular food, which has higher phosphorus levels than he should be having right now. So the separation is mainly to protect him, not to keep her away from his bowl. Once you get into a routine of separate rooms at mealtimes, this becomes very manageable.

Yes, absolutely — and they'll likely be pleased you're moving in this direction. Royal Canin Renal is one of the most commonly recommended veterinary diets for cats with kidney stress, so it won't be a surprise to them. If your vet decides to run further kidney function tests, the results will also give you a clearer picture of how strict you need to be going forward. For now, making the switch to wet renal food and separating mealtimes is the most practical and impactful thing you can do for him.