How to Get Your Cat to Drink More Water: A Vet-Backed Guide to Feline Hydration

Ask most cat owners how much their cat drinks and you'll get a shrug. Cats are secretive, low-volume drinkers, and it's easy to assume that because the bowl is topped up, everything is fine. But feline hydration is one of the quietest, most important pillars of cat health — and one where small changes at home can make a genuine difference to how long and how well your cat lives.

This guide explains why cats are built to drink so little, how chronic under-hydration links to the kidney and urinary problems vets see every day, how to spot the warning signs, and — most usefully — the practical tricks that actually get more water into your cat.

Why Cats Are Such Poor Drinkers

The domestic cat descends from the African wildcat, a desert animal that evolved to get almost all of its water from the bodies of its prey. A mouse is roughly 70% water, so a wild cat eating several small animals a day rarely needs to seek out a puddle. Over thousands of years, cats developed a famously weak thirst drive — they simply don't feel the urge to drink the way a dog or a human does.

That worked beautifully in the wild. It works far less well on a modern diet of dry kibble, which contains only around 6–10% moisture compared with the 70–80% in canned or fresh food. A cat eating mainly dry food should, in theory, drink much more to compensate — but its blunted thirst response often means it doesn't quite catch up. The result is a cat living in a state of low-grade, chronic dehydration that never looks like an emergency but slowly takes a toll.

Why It Matters: The Kidney and Bladder Connection

Water is not a luxury for a cat — it is what keeps the urinary system flushed and the kidneys working. When intake runs low, urine becomes more concentrated, and concentrated urine is the common thread behind two of the most frequent feline health problems:

• Chronic kidney disease (CKD). Kidneys that are asked to work with too little fluid, year after year, are under constant strain. CKD is one of the leading causes of illness and death in older cats, and good lifelong hydration is one of the few things owners can do to support kidney health.
• Feline lower urinary tract disease (FLUTD) and blockages. Concentrated urine encourages the crystals, inflammation, and mucus plugs that cause painful cystitis and, in male cats, life-threatening urethral blockages. Diluting the urine with more water is a first-line prevention that vets recommend again and again.

Better hydration won't cure these conditions on its own, but it meaningfully reduces the risk of them developing and helps manage them once they appear. That is why "get more water into your cat" is advice you'll hear in almost every consult about kidney or bladder trouble.

How to Tell If Your Cat Is Dehydrated

Because cats hide illness so well, you often can't tell by watching the bowl. A few checks at home give you a much better picture:

• The skin tent test. Gently pinch the loose skin over the shoulders and release it. In a well-hydrated cat it snaps back instantly; if it's slow to flatten, that's a sign of dehydration.
• Check the gums. Healthy gums are moist and slick. Tacky, dry, or sticky gums suggest your cat needs more fluid.
• Watch the litter box. Very small, rock-hard clumps of urine, or a cat straining and producing little, are red flags — both for dehydration and for urinary problems that need a vet.
• Notice the coat and energy. A dull, flaky coat, sunken-looking eyes, lethargy, or constipation can all trace back to poor hydration.

A rough rule of thumb is that a cat needs about 50 ml of water per kilogram of body weight per day from all sources combined — food and drinking water together. A 4 kg cat therefore needs roughly 200 ml a day. On wet food, much of that comes with the meal; on dry food, nearly all of it has to be drunk. If your cat is drinking noticeably more than usual, that matters just as much: a sudden jump in thirst is a classic early sign of kidney disease, diabetes, or hyperthyroidism, and warrants a vet visit.

The Tricks That Actually Work

The good news is that feline water intake responds well to a few simple environmental changes. You rarely need to force anything — you just have to make drinking more appealing to an animal with fussy, instinct-driven preferences.

1. Feed wet food — the single biggest lever

Nothing else comes close. Switching some or all of your cat's diet to canned, pouch, or fresh food delivers water inside the meal, exactly the way nature intended. If your cat is a committed kibble addict, start by mixing a spoon of wet food in, or add a few tablespoons of warm water or unsalted, onion-free broth to their existing food to bump up the moisture.

2. Try a pet fountain

Many cats are drawn to moving water and will drink far more from a flowing fountain than a still bowl — a leftover instinct that steered their ancestors away from stagnant, contaminated water. A circulating fountain also stays fresher and better oxygenated. Jackson Galaxy is a strong advocate for keeping cats well hydrated, and fountains are one of his go-to recommendations:

Cat behaviourist Jackson Galaxy on why hydration matters and how running water encourages cats to drink.

3. Offer more bowls, in more places

Cats don't like to travel far for a drink, and they instinctively avoid drinking right next to their food or litter box. Scatter several water stations around the home, away from the food bowl, so a drink is never more than a few steps away.

4. Fix the bowl itself

Two common culprits put cats off a bowl. The first is whisker fatigue: a deep, narrow bowl forces the whiskers to bend against the sides, which many cats find unpleasant. Use a wide, shallow bowl instead. The second is material and cleanliness — cats have sensitive senses and often prefer glass, ceramic, or stainless steel over plastic, which can hold odours. Fill the bowl to the brim so your cat doesn't have to dip its head into a narrow space, and wash it daily.

5. Keep it fresh, and experiment with temperature

Change the water at least once or twice a day — cats are far more likely to reject stale, dusty, or lukewarm water. Some cats prefer it slightly cool; try dropping in an ice cube on a hot day, which adds movement and interest as it melts.

This short, practical walkthrough from Chewy pulls several of these ideas together with easy at-home demonstrations:

A quick, hands-on guide to bowls, placement, fountains, and food tweaks that raise your cat's water intake.

What Not to Do

Don't try to syringe large amounts of water into a healthy cat's mouth — it's stressful, can cause choking, and rarely helps in the long run. Avoid giving milk as a "drink": most adult cats are lactose intolerant and it causes digestive upset. And never assume a cat that suddenly stops drinking, or one straining in the litter box with little to show for it, will simply sort itself out. A cat that won't drink at all for more than a day, or a male cat unable to pass urine, is a genuine emergency.

The Bottom Line

Your cat is descended from a desert hunter that was never meant to drink much, which is exactly why hydration deserves your attention on a modern diet. More moisture in the diet, running water, clean wide bowls in quiet spots, and fresh water changed daily all nudge a naturally reluctant drinker toward the intake its kidneys and bladder need. These are small, cheap changes — and over a lifetime they are some of the most protective things you can do for your cat's health.

This article is general information, not veterinary advice. If your cat's drinking habits change suddenly — much more or much less — or you see straining, lethargy, or signs of dehydration, contact your vet, as these can signal serious underlying conditions.