Cats are quietly bad at drinking water. It's not stubbornness — it's biology. The domestic cat descends from desert-dwelling ancestors who got most of their moisture from prey, so cats evolved a weak thirst drive and a habit of running mildly dehydrated. In the wild that's survivable. In a modern home, on a diet of dry biscuits, it can slowly set the stage for urinary and kidney problems. The good news: a few small changes to how you offer water usually fix it.
This guide covers why cats under-drink, the warning signs of dehydration to watch for, and the practical, vet-backed ways to get more water into your cat every day.
Why cats don't drink enough
There are a few overlapping reasons your cat walks past their water bowl:
- A low thirst drive. Cats don't feel thirst as urgently as dogs or people. They won't "top up" just because water is there.
- Dry food. Kibble is roughly 10% moisture, where prey (or wet food) is closer to 70–80%. A cat eating only dry food has to make up a large water deficit by drinking — and often doesn't.
- Fussiness about the bowl. Many cats dislike still, stale water, water near their food, plastic bowls that hold odours, or a bowl tucked in a busy corner.
- Whisker fatigue. Deep, narrow bowls press on a cat's sensitive whiskers. Some cats would rather stay thirsty than put up with it.
- Instinct to avoid stagnant water. In the wild, still water can mean contamination. Many cats are drawn to moving water instead — which is exactly why so many drink from dripping taps.
Why hydration matters more than people think
Chronic low-level dehydration is linked to some of the most common — and most serious — health problems in cats. When urine stays too concentrated, it encourages the crystals and inflammation behind feline lower urinary tract disease (FLUTD), bladder stones, and painful, sometimes life-threatening blockages (especially in male cats). Good hydration also supports kidney function, and kidney disease is one of the leading illnesses in older cats. Water helps the whole system flush and dilute as it should.
You don't need to become an expert in feline nephrology to act on this. The takeaway is simple: getting more water into your cat every day is genuinely protective, not just tidy pet-care advice.
Signs your cat may be dehydrated
Learn to spot these early. Mild dehydration is easy to reverse; a blocked or shutting-down cat is an emergency.
- The skin-tent test. Gently lift the loose skin between the shoulder blades and let go. In a well-hydrated cat it snaps back instantly. If it's slow to settle, that's a warning sign.
- Tacky or dry gums. Healthy gums are moist and slick. Press a fingertip against them — the pink colour should return in under two seconds.
- Lethargy, hiding, or loss of appetite.
- Sunken eyes or a dull, flaky coat.
- Changes at the litter tray — very small, hard, dark clumps (too little urine), or straining, crying, or frequent trips with little result. Straining to urinate, especially in a male cat, is an emergency — call your vet immediately.
If you're ever unsure, ring your vet. Cats are experts at hiding illness until it's advanced, so erring on the side of a phone call is always the right move.
How to get your cat to drink more water
1. Add wet food to the diet
This is the single biggest lever. Switching some or all of your cat's meals to wet food dramatically raises daily moisture intake, because your cat is "drinking" as they eat. Even mixing a spoon of water or low-sodium broth into meals helps.
2. Offer moving water
Because cats instinctively prefer fresh, flowing water over a still bowl, a circulating pet fountain often works when nothing else does. The movement keeps the water aerated, cool and appealing, and many fussy cats will happily drink far more from a fountain than they ever did from a bowl. Our Quiet Flow Fountain is built for exactly this — a quiet pump, filtered flowing water, and a low, whisker-friendly stream that encourages cats to drink on instinct. If your cat already stalks the kitchen tap, a fountain simply gives them a clean version on tap, all day.
3. Use the right bowls, in the right places
- Choose wide, shallow bowls to avoid whisker fatigue.
- Prefer ceramic, glass or stainless steel over plastic, which can hold odours and taint the taste.
- Set up several water stations around the house, away from the litter tray and, ideally, a little apart from the food bowl.
- Keep water fresh — refill daily and wash bowls often.
4. Make water more interesting
Some cats are tempted by a couple of ice cubes on a hot day, a splash of water from a tin of tuna (in spring water, not brine), or a wider, fuller bowl (cats often prefer the water level near the brim so they don't have to dip their face in).
5. Watch hydration hardest in summer
Australian summers push every pet's water needs up. Heat, panting and activity all drain fluids faster, and a cat who was borderline in winter can tip into real dehydration in February. The same principle applies to dogs — if you want the heat-safety version for dogs, see our guide to keeping your dog cool in an Australian summer.
When stress is part of the picture
Hydration and stress are quietly linked. An anxious cat may hide, eat less and drink less, and a cat who feels ambushed at an exposed water bowl (or one placed too close to the litter tray) will simply avoid it. If your cat seems tense, over-grooms, or has changed their eating and drinking habits, it's worth reading our pieces on whether your cat has anxiety and how to calm an anxious cat. Sometimes the fix for drinking is really a fix for feeling safe.
The simple version
Cats are built to under-drink, and dry food makes it worse — so the job is to make water easy, fresh, moving and everywhere. Add wet food, offer flowing water, spread out clean bowls, and keep an eye on the skin-tent and gum tests. Do that consistently and you're taking one of the most effective steps there is to protect your cat's urinary and kidney health for the long run.
This article is general information, not veterinary advice. If your cat is straining to urinate, hasn't drunk in over a day, or seems unwell, contact your vet straight away.