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 Much Water Does a Cat Need per Day? Vet-Approved Facts & Health Tips

Share

cat dipping its paw in water bowl

Like humans, cats require access to fresh drinking water, which is essential for proper body functioning and optimum health. Water helps cats maintain good health and flush out toxins from their systems while aiding their digestion and circulation.

Without enough water, cats could easily become dehydrated, leading to further health issues. Therefore, your feline should intake an adequate amount of water per day to stay properly hydrated.

But how much water does a cat need per day? As a general rule, cats should usually drink around 2 ounces of water for every 2.2 pounds of body weight (50-60 ml per kg).

In this article, we talk more about cats and their water requirements, including how long felines can survive without water and how much water they need per day!

divider cats oct 2024

How Much Water Do Cats Need per Day?

For their daily water intake, cats need between 3.5 and 4.5 ounces of water per 5 pounds of their weight 1.

Here’s a mini guide on how much water cats should have daily:
  • Kittens (3–6 pounds):5–5.5 ounces of water per day
  • Medium cat (8 pounds): 6–7 ounces of water per day
  • Large cat(13 pounds): 8–10 ounces of water per day

That said, every cat is different, and an individual cat’s water intake should be adjusted to their diet and current health.

Many cats get moisture from other sources besides water, including wet food and even dry food, faucets, puddles, bird baths or the bowls of other pets, so it may seem like they’re drinking less water than they’re supposed to.

That said, cats that don’t consume wet food nor have access to other sources of drinking water will require you to provide them with the necessary water for hydration.

How Long Can Cats Survive Without Water?

In general, most healthy cats can go 3 days without water (or even longer in experimental conditions), but of course, that doesn’t mean they should. If without water for that long, most cats will experience dehydration, organ failure, and other deadly health problems. Cats should have access to fresh, clean water every day.

Therefore, you must provide enough water for your cat every day in order to prevent dehydration.

divider cats oct 2024

Cat Dehydration: Causes, Signs, and Treatment

Dehydration in cats occurs when they don’t consume enough water needed for proper daily functioning. They will experience multiple body changes, including losing electrolytes and important nutrients like sodium, potassium, and calcium. The balance of these nutrients is crucial for keeping the cat’s tissues and organs in good shape.

vet listening to a cat's chest with a stethoscope
Image Credit: Andy Gin, Shutterstock

Causes of Dehydration in Cats

Some cats may experience dehydration if they’re not feeling well and therefore are not drinking enough water or if they have health problems that lead to excessive water loss. The main causes of dehydration in felines are:

  • Trauma
  • Vomiting
  • Diarrhea
  • Fever
  • Diabetes
  • Heatstroke
  • Kidney disease

Dehydration could be fatal for cats, which is why you should know how to recognize the signs in your furry companion, so you can quickly treat them to prevent further health damage and avoid severe medical problems.

Signs of Dehydration in Cats

Cat dehydration can be mild or severe, so the signs of this problem can vary. The most common signs include:

  • Dry gums
  • Increased skin tenting
  • Lethargy
  • Sunken eyes
  • Weakness and eventual collapse

If you notice any of these signs, immediately speak with your veterinarian and get the needed treatment for your cat.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

Preventative wellness PGV mention keep cat healthy Preventative wellness PGV mention keep cat healthy mobile

Treatment of Dehydration in Cats

The treatment of dehydration typically starts with your vet inspecting your cat to determine the severity and cause of the dehydration. Further treatment includes giving IV fluids to help your cat regain hydration. In many cases, the cat may require hospitalization.

Your vet will also help you treat any underlying health issues that your feline may be experiencing.

divider cats oct 2024

Frequently Asked Questions

How Can I Check My Cat’s Hydration?

If it seems that your cat isn’t drinking enough water, here are two easy ways  to see if your feline is hydrated:

  • Skin pinch test — If you gently pinch and pull your cat’s scruff skin, it should go back into position if your cat is properly hydrated. If the skin does not go back into position or takes a long time to go back, your cat may be dehydrated. Unfortunately, this test only works on young and healthy animals with elastic skin and is unsuitable for older cats and cats with medical problems.
  • Your cat’s gums —All you need to do is gently lift your cat’s lips and take a look at their gums. A cat’s gums should be wet and bright pink. Any signs of dryness or paleness could indicate that your cat is dehydrated.

What Should I Do If My Cat Is Dehydrated?

In most cases, dehydration in cats occurs due to an underlying medical problem rather than not having enough water. That said, if you suspect that your cat is dehydrated, consult your veterinarian and seek further advice.

In the meantime, you can help keep your companion hydrated on a hot day by offering them wet food or placing multiple water dishes around the house, offering a source of running water such as a cat fountain or even turning the tap on for them.

Why Won’t My Cat Drink Water?

Although cats don’t drink much water, they still need a certain amount of liquids to keep their systems functioning. So, if your cat won’t drink water, it’s important to determine the cause of the issue.

There are several reasons that your cat could be refusing to drink water, including:

  • They are already properly hydrated.
  • Their water bowl is not clean enough, or their water is not fresh.
  • Their water bowl is in a hard-to-reach location.
  • They could be experiencing medical problems.
  • The water bowl is near their food or litter tray instead of place away from them.
  • They have to share the water bowl and are anxious to do so.
  • The water bowl is in a high traffic area of the house such as the kitchen.

How Can I Help My Cat Drink More Water?

There are several tips and tricks that you can use to help your cat drink more water, including:

  • Place several water bowls around the house for easier access.
  • Try different types of bowls as cats can be particular about what they drink from. Wide, flat ceramic bowls or a glass on your bedside table, for example.
  • Regularly clean the water bowls and ensure that your cat gets fresh water every day.
  • Offer wet food or moistened kibble instead of dry cat food.
  • Discuss potential dietary changes with your veterinarian.
  • Consider making or buying a cat water fountain.

divider cats oct 2024

Final Thoughts

Felines require around 3.5–4.5 ounces of water per 5 pounds of body weight to maintain optimum health and stay hydrated. This includes water gained from food. Without enough water, cats could easily become dehydrated and suffer severe consequences. If you notice any signs of dehydration in your cat, contact your veterinarian to prevent further deterioration.


Featured Image Credit: yykkaa, 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

Vets Urge Owners: Don’t Ignore Sweet Smell Coming From Cats

Cats are not particularly known for having a pleasant aroma. The occasional whiff of fishy cat breath and that unmistakable post-litter-box scent simply...

“A Cat Spay Costs How Much???”

America has a kitten problem. Every day, thousands of cats and kittens are abandoned, surrendered, or discarded. Those who are lucky enough to...

Ask Dr. Paola – Help! My Cat Is Seeking My Attention! (June 15, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Everything I Need to Know About Cartoon Comedy, I Learned From My Pets

If you’ve ever looked at your cat doing something ridiculous and thought, “There has to be a joke in that somewhere,” Scott Metzger...

More related

Why Do Cats Like Squeezing into Tight Spaces? 7 Vet-Reviewed Reasons

Cats have many strange behaviors that can include chattering, kneading, headbutting, and more, but one of the strangest has to be their desire...

Munchkin Maine Coon Cat Mix: Pictures, Info, Temperament & Traits

The Munchkin Maine Coon mix is created by breeding the Munchkin, one of the world’s best-known short-legged cat breeds, and the Maine Coon,...

Why Is My Cat Peeing in the Laundry Basket? 8 Vet-Reviewed Reasons

When your cat pees somewhere they’re not supposed to, it can be both distressing and completely baffling. Rest assured that your cat is...

The Vocal Talents of Cats: Olga’s Repertoire of Sounds (with Video)

Hi, I’m Christopher! Read my introduction to learn more about me and my silly Russian Blue cat, Olga. I cared for a Siamese...

Keep reading

How to Get Your Cat to the Vet: 6 Vet-Approved Tips If They Really Don’t Want to Go

Going to the vet will be a routine (but hopefully not regular!) part of your cat’s life, but they might never acclimate well. Many cats do not like going to the vet as it raises several anxieties. It changes their...

vet putting bandage on cat after surgery

When Do Male Cats Become Sexually Active? Vet-Reviewed Signs & Recommendations

Kittens are cute, fluffy, and fun, but they grow up fast. Not only in terms of size and demonstrating more adult behavior traits, but also in mating habits. Sexual maturity and mating desires start early in the feline community. The...

male cat lying down

Can Cats Eat Celery? Vet-Reviewed Nutrition Facts & FAQ

Celery is a popular chips-and-dip accompaniment, and while your cat definitely shouldn’t have the chips or the dip, what about the celery itself? Can cats eat celery? In fact, there’s nothing wrong with giving them a few celery stalk pieces...

Can Cats Eat Celery

Living In a Multi-Pet Household: Which Pets to Choose & How to Get Along (Vet Reviewed)

A multi-pet household is one with multiple pets, but typically refers to pets of different species and not just breeds. Most multi-species households combine cats and dogs because these are the two most common pets, but they can also incorporate...

multiple cats eating from a bowl at home

10 Surprising Facts About Cat Ears: Vet-Approved Guide

Cats can be funny pets that do things that leave us feeling puzzled or amazed. As more research is being done on cats, experts are finding fascinating discoveries about cat anatomy that help explain their behavior and mannerisms. Cat ears...

A man's hand scratches a fluffy cat behind the ear

How Often Should You Clean Your Cat’s Ears? Vet Approved Facts & Step-by-Step Guide

Cats normally spend about 50% of their waking hours licking themselves as a self-grooming technique.1 However, their ears are out of their reach. So, how often should you clean your cat’s ears? Well, there is no exact answer to this...

woman-cleaning-cat-ear

Meet VOICE: The Program Helping Rescue Pets Through Simple Daily Clicks

What if you could help feed animals in need without spending a dime? At a time when the cost of living keeps rising, one of the first things to be scrapped from the household budget is charitable donations. Of course,...

his-eye-is-on-the-sparrow

How Much Time Should You Spend With Your Cat? Vet-Approved Advice

We all have busy lives, so we’re constantly trying to carve out time to spend with our family and friends and still have quality alone time. When you own a cat or multiple cats, you need to spend time with...

young cat owner playing with her pet at home

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.