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

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.

Need veterinary advice but can't get to the clinic? Catster recommends PangoVet, our online veterinary service. Talk to a vet online and get the answers and advice you need for your cat without having to leave your living room — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

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.

Our Favorite Cat Water Fountain

Making sure your cat drinks enough water can require a little creativity and the right fountain choice! A nicely made product like Hepper's Stainless Steel Cat Water Fountain will encourage your cat to stay hydrated by providing fresh, flowing water. We particularly like this model because it's easy to clean and offers excellent triple filtration, multiple flow modes, and a large capacity.

Hepper Stainless Steel Cat Water Fountain
  • Premium 304-Grade Stainless Steel - This metal cat water fountain is hygienic, with superior...
  • Serene & Healthy Cat Drinking Fountain Experience - With whisper-quiet pumping & an advanced...
  • Say Goodbye to Dehydration - Provide your cat with a constant source of flowing water with this...

At Catster, we’ve admired Hepper for many years and decided to take a controlling ownership interest so that we could benefit from the outstanding designs of this cool cat company!


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.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Sentry Calming Collar for Cats Review 2026: Pros, Cons & FAQ

Review Summary The Sentry Calming Collar for cats works under the premise of cat pheromone science. Simply put, mother cats produce a pheromone...

How to Give Your Cat a Massage: 11 Vet-Approved Tips & FAQ

When we want to pamper and treat ourselves, we book a 45 or 60-minute massage with our favorite masseuse. But have you ever...

Male vs Female Ragdolls: What’s the Difference? (With Pictures)

With many creatures in the animal kingdom, there is often a stark temperamental difference between the males and females of that species. It...

Why Is My Cat So Skittish? 5 Vet-Reviewed Reasons & Care Tips

Just like humans, cats have different personalities. If your cat is skittish, you may be wondering why. Some cats are simply shy and...

More related

Do Feral Cats Meow? Vet Reviewed Facts

If you own a cat, you know many are anything but quiet. Cats meow at you for any reason, and some constantly chatter...

Bengal Cat Price: How Much They Cost in 2026

Bengal cats are rare and only bred by specialty breeders. Therefore, not only is finding one quite difficult, but they can also be...

7 Cat Adoption Myths & the Vet-Reviewed Truths

If you’re considering welcoming a cat into your family from a shelter, you may have a few concerns. You may have heard that...

How to Make a Kitten Pacifier at Home: 2 Easy Options

Kittens typically don’t need pacifiers. However, some cats may find it soothing, especially if they were separated from their mother too early. Significantly...

Keep reading

Why Does My Cat Lay on My Stomach? 5 Vet-Verified Reasons

When you’re sitting still or lying down for long enough, it’s perfectly normal for your cat to come around and try to spend a little extra time with you. But why is your cat taking every chance they get to...

cat-sleeping-on-owners-lap

Can Cats Eat Fried Chicken? Vet-Reviewed Risks & FAQ

Cats tend to be pickier than dogs regarding food, and they don’t tend to beg for table scraps so frequently. However, if we have something interesting like fried chicken, they might come sniffing, which might make you wonder if it’s...

Can Cats Eat Fried Chicken

Why Do Cats Show You Their Butt? 6 Vet-Reviewed Reasons

Although cats have lived with humans for millennia, they still do many things that leave us feeling puzzled or confused. One behavior that can surprise or shock new cat owners is a cat’s tendency to show their butt when they...

black cat enjoying when owner scratch at the base of his tail showing the butt

Is Hibiscus Poisonous to Cats? Vet-Reviewed Houseplants Examined

Hibiscus plants produce gorgeous, colorful flowers and are relatively easy to grow in pots to keep indoors. If you’re growing these plants and your cat won’t leave them alone, you’re surely feeling frustrated. You’re probably even wondering if your cat’s...

Catster_Is Hibiscus Poisonous to Cats

Why Do Cats Pee on the Couch? 5 Vet-Verified Reasons & Solutions

Cats naturally take to litter boxes very well, so it’s alarming when they stop using the litter box and suddenly your cat keeps peeing on the couch. Improper urination on furniture is sadly quite common, and it doesn’t help matters...

White cat standing infront of his pee in the couch

How to Tell if a Cat Is Choking: 6 Vet-Reviewed Signs & What to Do

If your cat is choking, you need to ask fast, but before you try to give your cat the Heimlich, you should know what a choking cat looks like. Sometimes, cats look like they’re choking, but they’re coughing up a...

cat is choking

Why Has My Cat Suddenly Stopped Eating: 13 Vet-Reviewed Reasons

Cats tend to be fond of food, so if your cat suddenly stops eating, it’s common to feel that something terrible is wrong with them. And there are some cases where your cat isn’t eating because they aren’t feeling well....

cat in front of a bowl with meat and vegetables

Do Cats Gain Weight After Being Spayed? Vet-Reviewed Facts

Most prospective cat owners look forward to having their cat spayed or neutered. After all, tom cats and queens are significantly more annoying and cause a lot more trouble for their owners than spayed and neutered cats. However, most cat...

cat recovering from spay surgery

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.