How Much Water Should A Dog Drink In 24 Hours

How Much Water Should A Dog Drink In 24 Hours


Are you worried that your furry friend isn’t getting enough water? Do you go on long hikes and find yourself wondering how much water your dog needs to stay hydrated? There’s a quick and easy answer to these questions: dogs need an ounce of water for every pound they weigh. So if your dog is ten pounds, it needs ten ounces of water each day. Simple, right? Well, not quite. The amount of water a dog needs actually depends on several factors. Let’s take a look at the most important ones:

It depends on several factors.

The amount of water that a dog needs to drink every day depends on several factors. For example, the temperature of your environment can affect how much water your dog needs to stay hydrated. If it’s hot outside, it’s important to make sure that your pup has plenty of fresh water available so they don’t get overheated and dehydrated. A good rule of thumb is to check on them every few hours during the summer months and give them access to fresh water at all times if possible.

Another factor is activity level: if you take your pup for regular walks or let them play in the yard frequently, then their activity level will be higher than a sedentary dog who spends most of their time inside with limited outdoor access (or none at all!). Activity level also changes over time (for example some breeds grow quite rapidly during puppyhood) which can impact how much they need as well!

A dog needs about one ounce of water for every pound of weight.

A dog needs about one ounce (or 28 grams) of water for every pound of body weight. If you know your dog’s exact weight, this is a good rule of thumb to follow. But if you’re not sure how much your dog weighs, here’s another way to figure it out: divide the total number on its scale by two.

If your dog is overweight or obese, it may need more water than this guideline suggests because its body will be retaining more fluid as fat cells swell up with excess calories and nutrients. On the other hand, if it’s underweight—which can be caused by some diseases or from not eating enough—then it may need less than this guideline suggests because its body won’t be holding as much fluid overall (and therefore won’t require as much).

It depends on the temperature.

Water consumption will vary from dog to dog and even from one season to another. In hot weather, dogs can drink more water because they will perspire more. If your dog is overweight or underweight, he or she may need more or less water, respectively. Additionally, if your dog is active (playing fetch, running around the yard), he or she will require more water than if he/she were lounging around at home all day long.

It depends on how active your dog is.

How much water your dog needs depends on how active it is, which can be determined by looking at the type of food and treats you’re feeding your pup. If you’re feeding a high-quality dog food that contains higher levels of protein, fat, and other nutrients—all things that take more water to digest—you’ll need to give your dog more water throughout the day.

If your furry friend is not very active (for example if they spend most of their time lying around), they may not need as much liquid in order to keep themselves hydrated.

How much water a dog needs can change as it gets older.

The amount of water a dog needs can vary depending on its age and activity level. Older dogs tend to drink less, which can lead to dehydration. They are also more prone to kidney disease, urinary tract infections, and bladder stones. These conditions can make it difficult for an older dog to maintain their fluid balance if they aren’t drinking enough water.

How much water your dog needs depends on a variety of factors, but you should always make sure it has access to fresh, clean water.

The most important thing is that your dog has access to fresh, clean water. If it doesn’t, your dog can get sick or even die.

It’s also important for you to know how much water your dog needs each day so you can make sure it gets enough. In general, younger dogs need more than older ones because they are more active, but as a general rule of thumb all dogs should be eating and drinking about the same amount each day (for example: 3 cups).

How much water should my dog or cat drink?

Textbooks define normal water intake as 1-2ml per kilogram of bodyweight per hour (equivalent to approximately 25-50ml/kg/24hrs). For example, a 10kg dog, like a Westie, would be expected to drink approximately 480ml (just under a pint) in 24 hours. Marked variation can be seen between individuals, dependent on the amount of water taken in with their food (wet vs dry food), and water lost through exercise and panting.  

What is Polydipsia?

Polydipsia (increased drinking) is defined as more than 100ml per kg per day.

Some pets may have noticeably increased drinking, whilst still drinking less than this amount. More than 50ml/kg/24hrs may raise suspicion about polydipsia, whereas over 100ml/kg/24hrs is definitely polydipsia. Polyuria refers to an abnormally high urine production.  

Why is my dog or cat drinking so much water?

Water balance is tightly controlled by the body through regulation of water intake and water loss in the urine. Lack of water intake or excessive water loss causes the pituitary gland in the brain to release “anti-diuretic hormone” (ADH). ADH signals the kidneys to conserve water and to concentrate the urine.

In these circumstances, the thirst centre in the brain is also triggered to stimulate drinking. Increased drinking can occur either because the concentrating mechanisms of the kidneys fail, the kidneys do not respond to ADH, ADH is not produced or released, or because there is an excessive stimulus to drinking (primary polydipsia).  

What are the most common causes of my dog or cat drinking more?

The causes of an increase in the consumption of water in your pet can be varied. The kind of causes we see are:

  • Kidney (renal) dysfunction
  • Liver (hepatic) disease
  • Diabetes mellitus (“sugar diabetes”)
  • Diabetes insipidous (“water diabetes”)
  • Hyperthyroidism (over active thyroid) in cats
  • Pyometra, an infection of the uterus (“womb”) in unspayed animals
  • Cushing’s disease, an overproduction of natural steroid, cortisol, by the adrenal glands
  • Addison’s disease, reduced steroid production by the adrenal glands
  • Urinary tract infections
  • High calcium levels, sometimes associated with cancer
  • Behavioural issues as pets become psychologically obsessed with drinking excessive amounts of water (psychogenic polydipsia)
  • Compensatory polydipsia e.g. losses after vomiting or diarrhoea

If you are worried about your pet’s fluid intake, it can be helpful to measure their water intake over a 24 hour period and pass this information on to your vet, along with a fresh urine sample, ideally collected first thing in the morning.  

How will the causes of polydipsia be investigated?

Although most cases will be relatively straight forward to diagnose and require minimal testing (such as water intake measurement, a urine sample and a blood test), unfortunately others potentially can be time-consuming, frustrating and costly.

Your vet may recommend a series of tests and investigations, starting with:

  • Urinalysis to check how concentrated the urine is and to check for the presence of glucose and signs of infection.
  • Your vet may request that you also perform a 24 hour water intake measurement, (if this is practical), to confirm polydipsia and define the degree of polydipsia.
  • A complete blood count and serum biochemistry to check their liver, kidneys, blood glucose and thyroid levels. More specific blood tests of hormone function may then need to be performed following on from the initial tests.

After this, the Vets may need to do X-rays and an ultrasound of your pet’s abdomen to look more closely at their liver, kidneys and adrenal glands, in order to reach a diagnosis.  


Sometimes it can be difficult to get your dog to drink enough water, especially when they don’t seem like they want to drink at all. But remember that it’s very important to keep an eye on how much water your dog is drinking and make sure that they’re getting enough. It really isn’t good for them if they aren’t!

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