National kidney month - action against pet kidney disease
- Justin Lim
- 1 day ago
- 6 min read
(Source: Rankin animal clinic)
Every March, National Kidney Month puts a spotlight on how easily kidney health gets overlooked, in people and in pets alike. For cat and dog owners, this is a reminder worth taking seriously. Kidney disease is one of the most common health conditions in both species, and the damage typically builds quietly over years before any obvious signs appear.
Understanding what the kidneys actually do, what puts them at risk, and how something as simple as your pet's daily water intake can make a real difference, might be the most valuable thing you do for your companion this month.
What Kidneys Actually Do
The kidneys help regulate fluid balance, maintain healthy blood pressure, control electrolytes like potassium and sodium, stimulate red blood cell production, and remove metabolic waste from the bloodstream. When kidney function declines, all of these systems are affected simultaneously.
In cats, the signs tend to be subtle at first. Weight loss, a dull coat, reduced appetite, and changes in litter box habits are often the earliest things owners notice, and by the time these appear, meaningful damage has usually already occurred. Cats are also biologically wired with a low thirst drive, which means dehydration compounds kidney stress quietly and over a long period before it becomes visible.
In dogs, the early warning signs most commonly reported are increased thirst and more frequent urination. The challenge is that these are easy to dismiss. Many dog owners do not flag increased water consumption as a concern, even when it is already an active symptom of kidney disease. By the time a dog shows more obvious signs like vomiting, lethargy, or significant weight loss, the disease has typically progressed considerably.
In both species, the kidneys cannot regenerate lost tissue. Once function is gone, it does not come back. This is what makes prevention and early detection so important.
The Numbers for Cats
(Source: Manypets)
Chronic kidney disease, commonly called CKD, is among the most frequently diagnosed conditions in older cats. Estimates vary depending on the population studied, but research suggests that CKD affects somewhere between 20 and 50 percent of cats over the age of ten. In cats over fifteen, that figure climbs further, with some studies reporting prevalence as high as 80 percent.
These statistics highlight the importance of routine screening, especially in middle-aged and senior cats. The disease is often already well-established by the time a cat begins showing visible symptoms. Annual blood work and urinalysis are the tools that catch it early, when management options are most effective.
The Numbers for Dogs
(Source: Granada veterinary clinic)
Similarly, dogs are not immune. CKD is described as the most common kidney disease in small animals, with prevalence estimates in the general dog population ranging from under one percent up to around seven percent, depending on the study and the population examined. In dogs seen at referral institutions, rates have been reported as high as 25 percent.
The disease primarily affects older dogs, and age is consistently identified as the strongest risk factor, with each additional year of life increasing the likelihood of CKD. Certain breeds also carry higher risk, including Shetland Sheepdogs, Yorkshire Terriers, Pomeranians, and Boxers, among others.
As with cats, the challenge with dogs is that CKD is often diagnosed later than ideal. By the time obvious symptoms appear, such as vomiting, reduced appetite, lethargy, and significant weight loss, meaningful kidney damage has usually already occurred. The most common early warning signs, increased thirst and increased urination, are easy to overlook or attribute to other causes.
Why Hydration Matters
(Source: Arizona daily star)
Dehydration puts direct strain on the kidneys in both cats and dogs. When a pet does not take in enough water, the kidneys must work harder to filter increasingly concentrated blood. The kidneys compensate by producing highly concentrated urine, which allows waste products to be removed with less water, but this process cannot be sustained indefinitely without consequences. Over time, sustained low fluid intake contributes to reduced filtration efficiency and accelerated kidney tissue damage.
The relationship between hydration and kidney health runs in both directions. Kidney disease itself makes hydration harder to maintain. As the kidneys lose their ability to concentrate urine, pets urinate more frequently and lose more fluid than usual. That lost fluid needs to be replaced, but pets with declining kidney function are not always able to compensate adequately on their own. Managing hydration becomes an active part of managing the disease.
For pets already diagnosed with CKD, maintaining good hydration is one of the cornerstones of care. It reduces the concentration of toxins circulating in the bloodstream and slows the buildup of harmful waste products. Veterinary guidelines consistently recommend wet diets and increased fluid intake as key management strategies, and in more advanced cases, some pets receive supplemental fluids at home under veterinary guidance.
Ways to Support Your Pet's Hydration
(Source: PetMedic urgent care)
Small, consistent changes to your pet's environment and diet tend to have the most lasting impact.
For cats, the single most impactful change for most is switching from dry food to wet food, or at minimum incorporating wet food into daily meals. Even partial replacement of dry kibble with wet food increases overall moisture intake. Where the water bowl is placed matters too. Cats instinctively prefer to drink away from their food and away from their litter box. A water bowl placed right next to the food dish may be consistently ignored because of a deep-rooted instinct. Moving the bowl a little away often produces a noticeable difference.
Running water appeals to many cats in a way that still water does not. A pet water fountain keeps water circulating and oxygenated, mimicking natural moving water sources.
Bowl material and size also come into the equation. Wide, shallow bowls allow cats to drink without their whiskers touching the rim. Whiskers are highly sensitive, and persistent whisker contact with a bowl edge is a real deterrent for many cats. Ceramic and stainless steel tend to be preferred over plastic, which retains odors over time. Placing water in multiple locations throughout the home, including across different rooms and floors, makes access easier and often increases total intake.
For dogs, ensuring the water bowl is always clean and freshly filled is the most basic starting point. Bowls in contact with saliva and food residue are breeding grounds for bacteria, and a bowl that smells off to a dog, even subtly, may be avoided. Washing the bowl daily with soap and water keeps it appealing.
Placing multiple water sources around the home is particularly useful for older dogs with mobility challenges, so they do not have to travel far to drink. Adding wet food to the diet, or even adding a small amount of water directly to dry kibble, increases fluid intake without requiring the dog to drink more.
Flavoring the water with a small amount of low-sodium bone broth or chicken broth can make it more enticing for dogs who are reluctant drinkers, though the bowl should be washed more frequently when broth is used. Offering ice cubes as a treat is another approach some dogs respond to well, and it works particularly well in warm weather.
For both cats and dogs, checking the bowl at least once daily and keeping it in a quiet, accessible location away from high-traffic or startling areas of the home helps ensure your pet is not being discouraged from drinking by environmental factors you may not have considered.
When to consult your Vet
If your pet is drinking noticeably more water than usual, that is worth a vet visit. In both cats and dogs, increased thirst is one of the most consistent early signs of kidney disease, as well as diabetes and several other conditions that benefit from early diagnosis. If your pet is drinking less than usual, seems lethargic, is losing weight without a clear cause, or has visible changes in litter box or bathroom habits, these also warrant attention.
For cats over seven and dogs in their senior years, routine annual blood work that includes kidney values is a reasonable baseline. For pets over ten, discussing twice-yearly screening with your veterinarian is worthwhile.
Kidney disease in both cats and dogs is often manageable. The pets who do best are the ones caught early, before the disease has significantly progressed, and whose owners are actively involved in supporting their hydration and adjusting their diet as needed.
National Kidney Month
(Source: MCR health)
National Kidney Month is a good time to remember that your pet's kidneys are not to be ignored. Keep it as a reminder that attending to early signs and signals will have long term benefits.
As goes the National Kidney Month tagline "Kidney health for all: Caring for people, protecting the planet", so should it include your pets.
References and Helpful Links
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