Your dog's kidneys work harder than you think
Your dog's kidneys filter waste from the blood, balance fluids and minerals, and help control blood pressure. They do this quietly, every day, and they have a remarkable ability to keep working even when damaged — which is also why kidney problems are often found late. By the time a dog shows obvious signs, a large part of kidney function may already be reduced.
Kidney disease, often called chronic kidney disease or CKD, is one of the most common health problems in older dogs. It cannot be reversed, but with early detection, the right food, and regular vet care, many dogs live comfortably for a long time after diagnosis. A veterinary renal diet is one of the most important parts of that care.
Signs your dog's kidneys may need extra support
Kidney problems often develop slowly, and the early signs are easy to miss. Watch for:
- Drinking more water than usual, and needing to urinate more often
- Reduced appetite, weight loss, or becoming picky with food
- Vomiting or nausea, especially in the morning
- Tiredness, and less interest in walks or play
- Bad breath, or a sore mouth
- A dull coat, or gradual muscle loss
Any one of these signs can have many causes, but several together are worth a vet visit. A simple blood test and urine test can show how well the kidneys are working, and catching changes early gives your vet more options.
How a renal diet is formulated to help support your dog
A renal diet is not just "low protein". It is carefully balanced: moderate levels of high-quality protein, to reduce the waste the kidneys must filter; controlled phosphorus, to help support kidney function; and added omega-3 fatty acids. It is also formulated to be palatable, because dogs with kidney problems often lose their appetite — a diet only helps if the dog actually eats it.
Your vet will usually recommend a renal diet as soon as kidney disease is diagnosed, even if your dog still seems well. Veterinary nutrition research supports starting a renal diet early, and many vets consider it the single most useful step after diagnosis. It is a long-term diet, not a short course, so consistency matters more than perfection on any single day.
How Royal Canin Renal is formulated to help support your dog
Royal Canin Veterinary Diet Renal Dog Dry Food is a veterinary diet formulated to help support kidney function in dogs with chronic kidney disease. It is made with a moderate level of high-quality protein and a controlled phosphorus level, and it includes omega-3 fatty acids (EPA and DHA) to help support kidney health. It is also designed to be highly palatable, which matters a great deal when appetite is poor.
The food is available in 2kg and 7kg packs, as well as 2x2kg and 2x7kg multi-packs, so you can choose the size that suits your dog and your storage space. Because this is a prescription diet, it should only be fed on your vet's recommendation, and your vet may adjust the amount as your dog's condition changes.
Feeding and daily care tips
- Feed only on veterinary advice: Renal is a prescription diet. Start it only after your vet recommends it, and follow the feeding guide for your dog's weight and condition.
- Keep fresh water available at all times: Dogs with kidney problems drink more, and they need to. Change the water daily and keep the bowl clean.
- Encourage eating: Offer the food at regular times, and warm it slightly if your dog is reluctant to eat.
- Skip the extras: Avoid treats or table scraps unless your vet approves them — they can unbalance the diet.
- Keep up with check-ups: Regular vet visits and blood tests let the diet and care be adjusted as needed.
- Keep notes: Track appetite, water intake, and energy levels, so you can report changes to your vet.
When to talk to your vet
See your vet promptly if your dog stops eating, vomits repeatedly, seems very tired or weak, or has trouble urinating. Regular monitoring is part of kidney care, so do not skip check-ups even when your dog seems stable.
Disclaimer: This article is for general information only and is not veterinary advice. Prescription diets should only be used under veterinary supervision. Always consult your vet before changing your dog's diet.
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