Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How Long Can Cats Go Without Water? Vet-Verified Science & Facts

Share

Kitten drinking from a water bowl

Cats are notorious for not drinking enough water, to the point that there is an entire industry of pet fountains to entice cats to drink more. Even if you’re one of the lucky cat owners whose cat does drink enough water, it’s possible that your cat didn’t have access to water at some point.

Maybe the dog finished off the whole water bowl, or your kitty slipped past you and ended up accidentally closed in a bedroom or closet all day. These situations may have made you wonder how long your cat could have safely gone without water. Medically, cats need somewhere around 4 ounces of water for every 5 pounds of lean body weight per day

divider 3 paws

How Long Can Cats Go Without Water?

Generally speaking, cats need to drink water every day and should be offered it in an unlimited amount (also known as ad libitum). If your cat doesn’t drink water for a day, it’s a sign that something is seriously wrong, and you should promptly seek veterinary advice.

How Much Water Do Cats Need?

Cats need around 4 ounces of water for every 5 pounds of lean body weight daily. This means that a 10-pound cat needs approximately 1 cup of water daily. That doesn’t mean you should only leave a cup of water for your cat. Instead, their water bowl should be refilled every day.

Don’t panic if your cat doesn’t finish an entire bowl of water every day. Cats get moisture from their food, especially wet food. Wet food generally has a great deal of moisture, while dry food doesn’t provide much.

Outdoor and feral cats often get moisture from the creatures they catch and eat, like birds and lizards, but they also drink from water sources (such as a puddle, stream, or lake).

cat drinks water
Image Credit: AltamashUrooj, Shutterstock

divider 3 paws

What Are the Risks If My Cat Isn’t Drinking Water?

Without enough water, cats can go into organ failure. Severe dehydration can also lead to disorientation, lethargy, and changes in heart rate and breathing.

Cats who have access to water but choose not to drink enough are at an increased risk for kidney and urinary problems, especially urinary tract infections and urinary blockages. Male cats are especially at risk for urinary blockages. These blockages are a medical emergency and are extremely painful for cats.

What Do I Do If My Cat Isn’t Drinking Water?

The first thing to do if you notice your cat isn’t drinking water is to figure out if your cat really isn’t drinking water or if they’re drinking water from sources other than the water bowl.

You can do this by evaluating your cat for signs of dehydration. Another tip is to install cameras in your house to observe your cat’s behavior and drinking habits when you’re away.

In addition, evaluate your cat’s behavior. Is your kitty acting lethargic or withdrawn? Are they hiding or showing abnormal aggression? Are they urinating outside the litter box or not urinating at all? Are their stools normal, or are they having diarrhea or constipation? If you notice abnormal behaviors or changes in eating, drinking, or potty habits, contact a veterinarian.

Experiment With Ways to Increase Your Cat’s Fluid Intake

Once you’ve ruled these issues out and discovered that your cat just doesn’t like drinking water, start experimenting with ways to get your cat to drink more water.

You can try different types of water fountains with different shapes and flow settings to see if your cat will drink from them. Most cats readily drink more from a fountain as the flowing water usually piques their interest.

Some cats prefer to drink out of dripping water in a sink or a tub. Cats have very sensitive whiskers, and many cats don’t like drinking or eating out of bowls that allow their whiskers to brush against the sides, so trying out a wider drinking bowl for your cat may help encourage more water intake.

If your cat enjoys wet food, you can slowly increase the amount of wet food or add food toppers (such as a cat-safe gravy) in their diet under the guidance of your vet.


divider 3 paws

Conclusion

Cats are perceived as tough creatures, but domestic cats rely on us to provide adequate care in a safe environment. Ensuring your kitty has enough water at all times is an essential part of pet ownership, but the good news is that you have options, even for the most stubborn, non-water-drinking cat!

Monitor your cat’s water intake, and if you notice any changes in drinking habits or behavior, talk to your veterinarian. Sometimes, you deal with a cat who would rather play or nap than drink water, but other times, there may be a more insidious cause.

Experiment with water fountains, wet foods, and even water bowl shapes to find what works best for your kitty.


Featured Image Credit: Impact Photography, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About the Importance of Spaying/Neutering, Cat Retail Shopping Ban & Red-Level Storms | Chatty Cattys, Episode 30

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn are celebrating a major legal win for pets before diving into...

Is Your Cat Happy? Here’s How You Can Tell

Cats have a reputation for being indifferent, even inscrutable. But despite their seemingly ambivalent appearance, cats experience many emotions, including happiness, and they...

Human Brains Age Like Cats – New Study Debunks the 7-Year Rule

If you’ve ever caught your senior cat staring blankly at a wall, wandering the halls at 3 am, calling out for no clear...

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

More related

Ragamuffin vs. Ragdoll: Key Differences (With Pictures)

Many people get Ragamuffin and Ragdoll cats confused, and it’s easy to see why. They’re both large, fluffy, affectionate cats. If you don’t...

Good Eaters: Why a Cat’s Big Appetite Can Mean a Big Problem

Hi, I’m Dr. Lauren! Read my introduction to learn more about me and my two adventurous cats, Pancake and Tiller. Pancake may be...

10 Facts About Fat Cats & Feline Obesity (Vet-Approved)

Obesity is a major problem in domestic cats. Their food, which is naturally high in calories, is readily and freely available to them,...

Welcome to Seborga: A Small Mediterranean Nation of Cats

Tucked away in the southernmost foothills of the Alps, within sight of the Mediterranean Sea, is a tiny and little-known nation teeming with...

Keep reading

How to Keep a Barn Cat From Running Away: 7 Easy Tips

If you’ve ever lived on a farm, chances are you’ve had a few barn cats keeping tabs on the property, whether you meant to have them or not. Barn cats are feral or semi-feral animals skilled at controlling the vermin...

a feral barn cat relaxing in the shade

TEEF for Life Protektin30™ Review 2026: Our Hands-On Experience

It’s a fact: Cats do not like having their teeth brushed. But it’s also true that poor dental health can dramatically shorten your cat’s lifespan. So what’s a kitty owner to do? TEEF for Life says they have the solution....

TEEF for Life Review 2024 - featured image

4 Best Oral Flea Treatments for Cats in 2026 – Reviews & Top Picks

Like dogs, cats need regular flea medication to keep the pernicious little bloodsuckers off your cat’s silky fur. Fleas can transmit several dangerous pathogens to your kitty, from bacterial infections to tapeworms, as well as serious conditions, such as anemia...

young woman giving cat a tablet pill

How to Play With a Cat at Every Age: Vet-Reviewed Guide

Playing with your cat is a fun way to strengthen your bond and help your kitty become a healthier version of themselves. Some people think that all cats play the same regardless of age, but the truth is that kittens...

woman playing with her cat

Can Cats Eat Pine Needles? Vet-Approved Risks & Alternatives

If you want to celebrate Christmas with a beautiful pine tree in your house, but you also own a cat or two, you know how tricky this can be. Beyond the usual hazards of your cat vs. the Christmas tree,...

Can Cats Eat Pine Needles

How Long Do Cat Colds Last? Causes, Signs, & Treatments

Just like us, our cats can get the sniffles here and there. Respiratory illnesses are among the most common things that can go wrong with cats, and severe cases generally require veterinary attention. So, before reading the rest of this...

tired or sick cat

Can Cats Eat Vaseline? Vet-Approved Benefits & Precautions

Vaseline is a staple item in many people’s bathroom cupboards. It’s useful for many things, but have you ever considered using it on your cat? Is it even safe for cats? What exactly could you use it for? Vaseline is...

Can Cats Eat Vaseline

Why Do Cats Sometimes Drink Dirty Water? Vet-Verified Reasons, Risks & Prevention Tips

Some of the habits of our feline friends can perplex us as cat parents, which raises questions about their eating, sleeping, or grooming habits. For instance, even though your cat has a full and accessible water bowl, you’ll sometimes catch...

siamese cat drinking water

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.