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

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.

maine coon cat dipping its paw in water bowl
Image By: Pickless, Shutterstock

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.

Ensuring that your cat drinks enough water can be challenging, but with a little creativity and the right fountain, it can be achieved. Hepper's Stainless Steel Cat Water Fountain is a great product that will motivate your cat to stay hydrated by providing fresh, flowing water. This model is easy to clean and offers excellent triple filtration, multiple flow modes, and a large capacity, making it an excellent choice for your furry friend.

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!

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.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

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,...

Can Kittens Mate? What Age to Start Watching for It (Vet-Approved)

Perhaps you’ve just brought home your first kitten and are wondering when to get them fixed. This is particularly important if you have...

Runny & Watery Eyes in Cats: Causes & Treatments (Vet Answer)

Your cat’s eyes are not only pretty but also amazingly complex. Unfortunately, they can be fragile, too, and need to be taken care...

Can My Stress Affect My Cat? 5 Vet-Verified Tips on How to Help Your Cat in This Situation

Everyone feels stressed from time to time, but did you know that your stress could affect your cat, too? We usually change our...

More related

Why Is My Cat Biting Her Kittens? Vet-Approved Reasons & FAQ

People with a cat that has had kittens for the first time may find themselves confused by some of the behavior mama cat...

Abyssinian Cat Health Problems: Our Vet Discusses 5 Common Issues

With an ancestry possibly dating back to ancient Egypt, we can say with some confidence that the Abyssinian breed has been around for...

My Cat’s Cyst Keeps Filling Up, What’s Wrong? (Vet Answer)

Over their lifetime, our cats can develop all sorts of weird and wonderful lumps, bumps, swellings, and more. One of the least worrying...

Why Does Cat Pee Smell So Bad? 6 Vet Reviewed Reasons & Recommendations

If you own a cat, you’re intimately aware of how much their urine can smell. Dealing with a stinky litter box day in...

Keep reading

Why Is My Cat Scratching the Mirror? Possible Causes & Vet-Reviewed Solutions

There are several possible reasons a cat scratches a mirror. Figuring out the answer largely depends on the context of the behavior. Some cats may be trying to mark their territory since they have scent glands in their paws, and...

Do Cats Like It When You Boop Them? Understanding Your Furry Friend

Booping a cat is the ultimate way to ask a cat’s permission to give them some love. It generally involves taking one finger, touching your cat’s nose, and then holding it out for a cat to investigate. Some, but not...

Can Cats Eat Jell-O? Vet-Approved Nutrition Advice

Cat parents are always on watch when it comes to what their kitties eat. As a responsible owner, you need to ensure that your feline eats nutritious meals that are intended to keep them happy and healthy. As anyone who’s...

Can Cats Eat Jell-O

Why Is My Cat So Jumpy All of a Sudden? 8 Vet Reviewed Reasons 

It can be alarming to see your cat act jumpy all of a sudden, especially out of nowhere. Cats cannot tell us exactly how they feel, which is why cat owners should pay close attention to their cat’s body language....

scared British blue-point cat hiding under the bed

Why Does My Cat Lie on Me? 5 Vet-Reviewed Reasons

We all love to spoil our cats, so they tend to get new toys and tasty treats more often than we do! Seeing them napping in odd spots around the house inspires many cat owners to purchase a special cat...

cat sleeping in owner's arms

Cat Pheromones for Aggression: Vet Approved Facts & FAQ

If you have the time, space, and financial ability, there are many benefits to owning more than one cat. The kitties can keep each other company when you’re away, play together, and help each other exercise. However, not all adult...

Angry,Calico,Cat,Lying,On,Edge,Of,Bed,Wagging,Tail

What Do Cats Need in Their Diet? 6 Vet Verified Essential Nutrients

Cat owners want their beloved felines to live a long, happy life, and that long and happy life starts with nutrition. Cats are obligate carnivores, meaning they require nutrients found in animal meat to thrive. A critical aspect of being...

black and white old cat eats from a plate

How to Shave a Cat’s Bum: 6 Vet-Approved Steps

If you’re starting to notice an unpleasant odor following your cat, and if you’re starting to see unpleasant remnants in their nether regions, it might be time for a sanitary trim. It’s not a fun process for anyone, but when...

cat being groomed and shaved at a salon

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.