Cats are experts at hiding illness. A cat with kidney disease may keep eating, keep grooming, and keep curling up in its usual spot — while its kidneys are quietly working less well than they should. By the time many cat parents notice something is wrong, the disease has already been developing for months. That is why knowing the early signs matters so much: the sooner kidney trouble is found, the more your vet can do to support your cat.
Why kidney disease is so common in cats
Chronic kidney disease is one of the most common health problems in cats, especially in cats over seven years old. The kidneys filter waste from the blood, balance fluids and minerals, and help control blood pressure. As cats age, the tiny filtering units inside the kidneys slowly wear out, and the kidneys gradually lose their ability to do this work. Unlike an injury or an infection, this decline is usually slow and painless, which is why it is so easy to miss.
Other things can damage the kidneys too — infections, urinary blockages, certain medicines, and inherited conditions in some breeds. But in most older cats, kidney disease is simply a slow, age-related change. Your vet can detect it with blood and urine tests, often before any signs are visible at home, which is one reason regular senior check-ups are worth keeping.
Signs to watch for at home
- Drinking more water than usual, and visiting the water bowl or tap more often.
- Urinating more often, or producing larger amounts of urine in the litter tray.
- Eating less, or becoming fussy about food that was once enjoyed.
- Gradual weight loss, even when the cat still seems to be eating.
- A dull or unkempt coat, or less interest in grooming.
- Less energy, more sleeping, or hiding away more than usual.
- Occasional vomiting or bad breath, which can appear as waste builds up in the blood.
Any one of these signs on its own may mean nothing. But if you notice two or more, or if a change is steady rather than a one-off, book a vet visit and mention that you are concerned about the kidneys. Early blood and urine tests can confirm what is happening and give your vet a baseline to track over time.
How a renal diet supports your cat
Royal Canin Veterinary Diet Renal Adult Cat Dry Food is formulated to support cats with kidney disease. It is designed with nutrient levels adjusted to reduce the workload on the kidneys while still giving your cat the energy it needs. It also helps support appetite, which matters a great deal: cats with kidney disease often eat less, and a cat that stops eating can become weak quickly. A renal diet should only be fed on your vet's recommendation, and your vet will decide how it fits alongside any medication or other care your cat receives.
Feeding a cat with kidney disease
- Offer fresh food in small, frequent meals, and serve it at room temperature.
- Keep fresh water available in several places, and consider a cat water fountain — many cats drink more from moving water.
- Warm the food very slightly if your cat sniffs and walks away; aroma helps appetite.
- Do not add salt, gravy, or table scraps, and check with your vet before adding any supplement.
- Weigh your cat regularly and note appetite, thirst, and litter tray habits to share with your vet.
- Keep every follow-up appointment and blood test your vet schedules, even if your cat seems stable.
Kidney disease cannot be cured, but with steady veterinary care, regular monitoring, and a diet formulated to support the kidneys, many cats keep a good quality of life for years. The goal of feeding is simple: help your cat eat well, stay hydrated, and hold its weight — one appetising bowl at a time.
Royal Canin Veterinary Diet Renal Adult Cat Dry Food is available at Paw Store.
It is available at Paw Store in a 2kg pack.
This article is for general information only and is not veterinary advice. Prescription diets should only be fed under veterinary supervision. Always consult your vet before changing your cat's diet, especially if your cat has a diagnosed health condition.
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