Water is the most overlooked nutrient. We obsess over food labels and portions, yet hydration quietly underpins kidney function, digestion, temperature regulation, and overall health. Encouraging pets to drink matters for every animal, but it’s especially critical for cats, who have a naturally low thirst drive and are prone to kidney and urinary problems when chronically under-hydrated. The good news is that a few simple changes — the right food, well-placed fresh water, and a few clever tricks — can meaningfully boost how much your pet takes in. And because changes in drinking are an important health signal, paying attention pays off in more ways than one.
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Throughout, keep your vet in the loop: a sudden change in how much your pet drinks — up or down — can be an early warning sign worth investigating.
Why Hydration Matters So Much (Especially for Cats)
Adequate water keeps the kidneys flushing waste, supports digestion, cushions joints, and helps regulate body temperature. When a pet runs chronically low on fluids, the kidneys and urinary tract bear the brunt — concentrated urine is a setup for crystals, stones, and irritation.
Cats are uniquely vulnerable. They evolved in arid environments, getting most of their water from prey, and have a famously weak thirst drive — many simply won’t drink enough to compensate for a dry diet. This is a major reason hydration features so heavily in feline kidney and urinary care; our guides to feeding a cat for urinary health and feeding a senior cat both lean on it. Dogs generally drink more readily, but hydration still matters, particularly in heat, during illness, or for active dogs.
The trouble is that a cat’s low thirst drive evolved alongside a diet of moisture-rich prey. In the wild, a cat hardly needs to drink because its food is roughly three-quarters water. Feed that same cat a dry kibble diet and the math no longer works — the moisture deficit isn’t fully made up by drinking, because the thirst signal that would prompt extra drinking is naturally muted. Over months and years, that quiet shortfall keeps the urine concentrated, which is a setup for the very urinary and kidney problems cats are prone to. Understanding this explains why so much feline care advice circles back to getting more water into them.
Wet Food: The Hydration Workhorse
The single most effective way to increase a cat’s water intake is feeding wet food. Canned and pouched foods are largely water, so a cat eating wet food takes in far more moisture than one on dry kibble alone — closer to how they’d hydrate from natural prey. For cats prone to urinary issues or with kidney concerns, this matters enormously.
You can also add a little extra water or low-sodium, onion-and-garlic-free broth to wet food to boost moisture further. For dogs, moistening kibble or mixing in some wet food can help too, especially for picky drinkers or seniors. If you’re weighing dry versus wet, your vet can advise based on your pet’s needs — and any food change should be made gradually over about a week to avoid GI upset.
If a fully wet diet isn’t practical, even a partial shift helps — mixing some wet food into a kibble-based diet, or offering wet food as a portion of the day’s meals, still meaningfully raises water intake. The goal isn’t perfection; it’s nudging the daily moisture total upward, especially for a cat that drinks little on its own. As with any dietary change, transition gradually so your pet’s stomach has time to adjust, and let your vet weigh in if your pet has a condition like kidney or urinary disease where the diet does real medical work.
Make Fresh Water Irresistible and Everywhere
Pets are surprisingly fussy about water. A few adjustments make a real difference:
- Keep it fresh. Change water at least daily and wash bowls regularly — stale or filmy water is off-putting.
- Offer multiple stations. Place several water bowls around the home, on different floors and in the rooms where your pet spends time. More opportunities mean more drinking.
- Try different bowls. Some pets prefer wide, shallow bowls (cats especially dislike their whiskers brushing the sides), and some prefer ceramic, glass, or stainless steel over plastic.
- Use larger bowls for cats so the water surface is easy to reach without whisker contact.
Small environmental tweaks like these often unlock more drinking than any single dramatic change.
Fountains and Smart Placement
Many cats — and some dogs — are drawn to moving water, an instinct that flowing water is fresher than stagnant water. A pet water fountain provides a continuous, filtered, moving source that can significantly increase intake for fountain-loving pets. Keep it clean and the filter fresh, since the appeal is undone by grime.
Placement is just as important. Position water away from the food bowl (some cats instinctively avoid drinking right next to where they eat) and well away from the litter box — no one wants to drink beside the toilet. Put water in quiet, accessible, low-traffic spots where your pet feels safe lingering. In multi-pet homes, ensure no animal guards the water source; see feeding multiple pets with different diets for managing shared resources.
These instincts trace back to the wild, where standing water near a kill site or a soiled area could mean contamination. Your cat doesn’t reason this through, but the preference is real: a bowl tucked beside the food or the litter box may simply go unused, while the same bowl moved to a calm corner gets visited. It’s worth experimenting with location, height, and the number of stations until you find what your particular pet favors. Cats especially can be surprisingly opinionated, and a small change that seems trivial to us can make a real difference in how much they drink.
Tricks to Tempt a Reluctant Drinker
If your pet still isn’t drinking enough, a few gentle tricks can help:
- Water-topping — add a splash of water to wet food, or “soup up” meals with extra moisture.
- Low-sodium, pet-safe broth — a little plain broth with no onion, garlic, or excess salt can make water or food more enticing. Confirm it’s pet-safe.
- Ice cubes — some pets enjoy licking or playing with ice, especially in warm weather.
- Flavored water — a tiny bit of tuna water (from tuna packed in water, not oil or brine) can encourage some cats; use sparingly.
- Multiple textures — offering both a still bowl and a fountain lets your pet choose.
For pets recovering from illness or refusing food and water, our guide on feeding a cat that refuses to eat covers next steps — and remember that a cat not eating or drinking for more than a day needs prompt veterinary attention.
When you try these tricks, give each one a little time and pay attention to which your pet actually favors — pets have strong individual preferences, and what tempts one cat may bore another. Keep flavored additions like tuna water or broth small and occasional so they don’t add meaningful calories or train your pet to refuse plain water entirely. The aim is to make hydration easy and appealing, not to turn every drink into a treat. For most pets, the biggest wins come from wet food, fresh water in good locations, and a fountain if they like moving water; the little tricks are helpful extras on top.
Reading the Warning Signs: Dehydration and Changes in Thirst
Hydration is also a window into health. Knowing how to spot dehydration is a valuable skill — our guide on how to check your pet for dehydration walks through the skin-tent test, checking gums, and other signs like lethargy and sunken eyes. If you suspect dehydration, contact your vet; significant dehydration needs professional treatment, not just a bowl of water.
Equally important is noticing changes in drinking. A pet that suddenly drinks much more than usual (and often urinates more) can be signaling an underlying problem — kidney disease, diabetes, or other conditions all increase thirst. A pet that suddenly stops drinking is also concerning. Either way, don’t just adjust the water bowl — a meaningful change in thirst is a reason to call your veterinarian, who can run tests to find the cause. Tracking your pet’s normal intake makes these changes easier to catch early.
Frequently Asked Questions
Why is hydration so important for cats specifically?
Cats evolved in dry climates with a low thirst drive, getting most of their water from prey, so many don’t drink enough on a dry diet. Chronic under-hydration concentrates the urine and stresses the kidneys and urinary tract, making cats prone to crystals, stones, and kidney disease.
How can I get my cat to drink more water?
Feed wet food (the most effective method), offer multiple fresh water stations, try a pet fountain since many cats prefer moving water, use wide bowls to avoid whisker contact, and place water away from food and the litter box. A splash of broth or tuna water can also help.
Does wet food really help with hydration?
Yes. Canned and pouched foods are largely water, so pets eating wet food take in far more moisture than those on dry kibble alone. This is especially valuable for cats with urinary or kidney concerns. Make any food change gradually over about a week.
How do I know if my pet is dehydrated?
Signs include reduced skin elasticity (a slow skin-tent test), tacky or dry gums, lethargy, and sunken eyes. If you suspect dehydration, contact your vet, since significant dehydration needs professional treatment rather than just offering water.
My pet is suddenly drinking a lot more — should I worry?
A sudden increase in drinking and urination can signal kidney disease, diabetes, or other conditions, and a sudden drop is also concerning. Don’t just adjust the water bowl — call your veterinarian, who can run tests to find the cause. Tracking normal intake helps you catch changes early.
