Spot the Subtle Signs Before It's Too Late

Chronic Kidney Disease in Cats2 What Every Pet Parent Needs to Know

Chronic Kidney Disease (CKD) is one of the most common illnesses affecting older cats—but because it progresses slowly over time, it often goes unnoticed until symptoms become serious. At Kimvet, we believe early awareness can make all the difference in helping your feline friend live a longer, healthier life.

Let’s take a closer look at the tell-tale signs and what they really mean.

Loss of Appetite & Weight Loss

Cats with CKD often lose interest in food due to nausea, toxin buildup in the blood, or oral ulcers. Even picky eaters will show a noticeable drop in enthusiasm for meals. As appetite decreases, gradual weight loss can follow—especially concerning in senior cats.

Increased Thirst & Frequent Urination

One of the earliest and most common signs, these symptoms occur because damaged kidneys can’t concentrate urine properly. You might notice your cat drinking from unusual sources (taps, plant trays) and needing the litter box more frequently.

Weakness, Lethargy & Sleeping More

Toxins in the bloodstream and poor hydration may leave your cat feeling sluggish. If they’re not playing like they used to, or snoozing far more than usual, it’s worth noting—especially when combined with other symptoms.

Changes in Coat & Grooming Habits

A dull or matted coat can reflect internal health issues. Cats with CKD often reduce grooming because they feel unwell or fatigued. Some may also experience dehydration, which dries out the skin and fur.

Dull or Sunken Eyes

Eyes are windows to your cat’s health. In cases of dehydration or advanced CKD, the eyes may appear hollow, cloudy, or lose their bright clarity. These are subtle signs, but they can reveal a lot about your cat’s overall condition.

Bad Breath (Halitosis)

CKD can lead to uremic breath—a sharp, ammonia-like odor caused by toxins accumulating in the body. If your cat’s kisses smell more pungent than usual, it’s not just a dental issue.

Chronic Kidney Disease in Cats3 What Every Pet Parent Needs to Know

Chronic Kidney Disease in Cats4 What Every Pet Parent Needs to Know

None of These Signs Are Exclusive to CKD

Here’s the tricky part—most of these symptoms could indicate a variety of health issues. That’s why your vet may run tests like bloodwork and urinalysis to determine kidney function. A diagnosis of CKD is rarely based on just one symptom.

What You Can DoMonitoring changes at home is crucial. Keep a journal of behavior shifts, appetite levels, hydration, and litter box usage. Follow up regularly with your vet, especially if symptoms worsen or new ones appear.At Kimvet, we’re here to support every step—from diagnosis to dietary adjustments and long-term care plans. Your cat’s comfort and quality of life matter deeply to us.

Nutritional Goals for Cats with CKD

Reduce phosphorus: Helps slow kidney damage and reduce symptoms like nausea and vomiting.
Moderate protein: High-quality, easily digestible protein supports muscle without overloading the kidneys.
Increase moisture: Hydration is critical—wet food or added water helps compensate for fluid loss.
Control sodium: Mild sodium restriction may help manage blood pressure and reduce kidney workload.
Boost potassium: Cats with CKD often lose potassium in urine, so diets may include extra to prevent weakness.
Add omega-3 fatty acids: EPA and DHA from fish oil can reduce inflammation and oxidative stress on kidneys

Recommended Diet Types

Diet Type	Features	Notes
Prescription renal diets	Low phosphorus, moderate protein, added omega-3s, potassium, and antioxidants	Best for cats in IRIS CKD stages 2–4
Moisture-rich foods	Canned or rehydrated meals to support hydration	Encourages water intake and reduces risk of dehydration
Homemade diets	Customizable with vet guidance	Must be carefully balanced—consult a veterinary nutritionist