Nierproblemen bij katten: welke rol speelt drinkgedrag?
Kidney problems are common in cats, especially as they get older. Adequate hydration plays a key role in this: it relieves the kidneys and helps eliminate waste products. In this blog, you'll read about which signs to look out for and how to encourage your cat to drink more.
📌 In brief
- Cats naturally drink little, which puts extra strain on the kidneys.
- Good hydration helps eliminate waste products and supports kidney function.
- Noticeable increased drinking and urinating can be an early sign of kidney problems.
- A drinking fountain encourages cats to drink more thanks to fresh, flowing water.
- If kidney problems are suspected, veterinary examination is essential.
By the SmartPaw editorial team · facts checked by veterinarians and official sources · Published July 26, 2026 · Last updated July 26, 2026
What role does drinking play in your cat's kidneys?
Drinking is crucial for healthy kidneys. The kidneys filter waste products from the blood and excrete them through the urine. If your cat does not get enough fluids, the urine becomes more concentrated and the kidneys have to work harder, which can worsen damage in the long run.
Cats are descended from desert animals and have a low thirst drive. As a result, they naturally drink little, which increases the risk of kidney strain.
What are the signs of kidney problems in cats?
One of the earliest signs is precisely increased drinking and urinating. Other signs include weight loss, decreased appetite, a dull coat, vomiting, and lethargy. These symptoms often develop gradually.
| Sign | What it might mean |
|---|---|
| Drinking and urinating a lot | Early sign of reduced kidney function |
| Weight loss | Decreased appetite or illness |
| Dull coat | Dehydration or nutrient deficiency |
| Vomiting and lethargy | Accumulation of waste products |
⚠️ Go to the vet
Do you notice that your cat suddenly drinks and urinates much more, or loses weight? Have this investigated. Kidney problems cannot be cured, but early detection makes a big difference for the quality of life.
How do I get my cat to drink more?
The easiest way is to offer fresh, flowing water via a drinking fountain. Cats instinctively drink more from flowing water than from a still bowl. Also, spread several drinking points around the house and, if necessary, give some wet food for extra moisture.
HydroBuddy 4L drinking fountain (stainless steel, app)
Fresh, filtered, and flowing water that encourages your cat to drink more – a support for the kidneys.
View product →Do you have multiple cats or no power outlet nearby? The wireless AquaPaw 2.5L battery-powered drinking fountain is then handy. View all models in our collection of drinking fountains for cats.
💡 Tip: Change the water daily and replace the filter in time. Clean water tastes better and cats drink more of it.
Frequently asked questions
Can not drinking enough cause kidney problems in cats?
Not drinking enough does not directly cause kidney disease, but it does strain the kidneys and can worsen existing problems.
Is drinking a lot a bad sign for my cat?
Suddenly drinking much more can indicate kidney or other disorders. Have it examined by your vet.
Does a drinking fountain help with kidney problems?
A fountain stimulates fluid intake, which supports the kidneys, but does not replace veterinary treatment. Also read 5 signs that your cat is drinking too little.
How do I recognize dehydration in my cat?
Among other things, by a dry nose, sunken eyes, and slow skin recoil. Read recognizing dehydration in dogs and cats and bladder stones and the role of drinking.
Discover SmartPaw drinking fountains →
Sources: International Cat Care (icatcare.org), Cornell Feline Health Center.
This blog is informative and does not replace veterinary advice.
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