Why Is My Dog Drinking a Lot of Water?

Dogs need the right amount of water daily, just like people. Various factors like weather, exercise, and diet can affect how much water a dog drinks. Recognizing unusual drinking patterns is crucial since drinking too much water could indicate health problems. Understanding a dog’s typical water intake can help notice these changes early.

Excessive thirst by dogs, which specialists call polydipsia, might signal underlying conditions. A dog’s elevated water consumption may be paired with more frequent urination. It’s vital to follow a vet’s guidance regarding a dog’s water intake to ensure proper care and support.

Understanding Canine Hydration

Water plays key roles in a dog’s body, affecting everything from digestion to temperature regulation. Recognizing normal water intake amounts can help identify when there might be a problem.

Water is vital for a dog’s health. It helps digest food by breaking it down for nutrient absorption. It’s also crucial for blood circulation, ensuring all body parts receive oxygen and nutrients. Water keeps joints lubricated, supporting mobility.

Dogs need water to regulate body temperature. When they pant, it cools them down, and water helps restore balance. Water aids in waste removal through urination. Without enough water, toxins can build up, causing health issues. Keeping dogs hydrated is essential for their well-being.

Daily Water Needs for Dogs

Dogs usually need about 1 ounce of water for each pound they weigh every day. For example, a dog weighing 10 pounds should have around 10 ounces of water daily. This amount might increase if the dog is a puppy, very active, nursing, or living in a hot place.

Certain factors affect a dog’s water consumption. For instance, canned dog food contains moisture, which may reduce their need to drink from a bowl. Regardless of intake, dogs must always have access to water.

Never restrict a dog’s water access unless instructed by a veterinarian. Always make sure water is available, even during nights or trips. Limiting access can lead to dehydration and electrolyte issues, potentially causing kidney problems. Maintaining water availability is crucial for a dog’s health and well-being.

Checking Your Dog’s Daily Water Intake

To monitor how much water your dog drinks each day, begin by filling their water bowl to the same level at the same time every morning. It’s helpful to measure the water level when filling the bowl and again at the end of the day to see exactly how much has been consumed.

Some bowls come with measurement markings which can make this task simpler. Keep in mind that these may not work well if they are easily spilled or tipped over, especially by young children or other pets.

For households with multiple pets, using microchip-activated bowls can be effective. These bowls open specifically for the microchip assigned to each pet, allowing for accurate tracking of individual water intake.

If you notice any changes, like an increase in how much your dog drinks or more frequent trips outside to urinate, it’s advisable to consult a veterinarian.

Reasons Why a Dog Might Drink More Water

Non-medical concerns

Wet Food Diet

When dogs eat wet food, they might drink less water because these meals already have a high water content. This means they get hydration from both food and water. Foods with high salt or protein levels can make them thirsty.

Dry kibble may also cause increased thirst compared to wet food. Dietary changes may lead to noticeable increases in water consumption. Monitoring eating habits helps ensure they get the right amount of water.

Dogs’ Ages

Young pups and older dogs might drink more water. Puppies drink more because they are very active, their kidneys are still developing, making them go to the bathroom more. Older dogs might drink more due to health issues or changes in their abilities.

Treatments and Pills

Some treatments can make dogs feel thirstier than usual. For example, diuretics increase urination, anti-seizure drugs, and corticosteroids can all raise water intake and peeing.

Warm Weather

In hotter places, dogs may drink more to avoid dehydration. They need extra water to help cool them down and replenish lost fluids.

High Activity Levels

Dogs that frequently play or workout need extra water. They sweat a lot, especially during playtime, and need water to keep going.

Medical Concerns

Various health problems can increase a dog’s water cravings. Below are a few possible conditions:

Salt and Mineral Issues

A dog’s urge to drink increases when the balance of minerals like sodium and potassium is disrupted. Too much thirst or peeing can signal this imbalance. Symptoms like dizziness, weakness, confusion, or being extra tired should prompt a vet visit.

Lack of Water

Sometimes, not having enough water causes dogs to drink more actively. Symptoms such as sticky gums, sluggishness, heavy breathing, bright red gums, or unusual saliva are signs. It’s vital to get help if these appear.

Stomach Problems

Vomiting or diarrhoea in dogs often leads to more water intake. Excessive drinking can increase these symptoms though. Consistent symptoms mean seeing a vet is important.

Getting Too Hot or Having a Fever

When a dog has a temperature increase either from hot settings or illness, they might gulp more water. Other signs like abnormal panting and thick saliva make a vet visit necessary.

Not-Working-Right Kidneys

Kidneys usually get rid of waste. As kidneys function less well, more urine is produced, resulting in more thirst. Attention is needed when the kidneys degrade as this issue can progressively worsen.

High Blood Sugar

With diabetes, excess sugar exits the body through urine. This draws water, increasing thirst and urination. If additional problems like reduced appetite, changes in breath smell, or vomiting appear, a vet should check things out quickly.

Excessive Urination Problem

This rare ailment results in high thirst and excessive peeing. Despite drinking large amounts, dogs can end up dehydrated from losing too much fluid. Though less urgent, distinguishing it from other issues needs a vet visit.

Constant Cortisol Problem

Cushing’s disease causes increases in cortisol that raises both thirst and bathroom frequency. Other signs include hair loss, belly changes, and increased appetite. Evaluation by a vet based on these signs is advised.

Uterus Infection

In females that aren’t spayed, inflammation and bacteria can elevate thirst. Signs like pus, tiredness, or not eating should never be overlooked as risks are high.

Liver Problems

Infections such as Leptospirosis affect liver function. Drinking more can indicate this issue since it affects urine creation. Has your dog wandered through standing water? They might need to see a vet if they’re not vaccinated.

Stress and Anxiety

Dogs, like humans, can get stressed and anxious. Triggers can be changes in the home, loud noises, or separation from their owners. Stress can cause a dog to feel nervous which might lead to increased water drinking. Drinking water can be a way for them to comfort themselves.

An anxious dog might not just drink more but also pant excessively and seem restless. Owners should watch for other signs of stress. Calm environments and routine can help ease their anxiety. Understanding these signs can assist pet owners in addressing the root of the issue.

Compulsive Behaviours

Compulsive behaviours in dogs are repetitive actions they can’t seem to control. These behaviours might include excessive licking, tail chasing, or pacing, and can also extend to drinking water.

Compulsive drinking might be triggered by boredom or lack of exercise. Dogs need mental stimulation and regular activity to stay healthy. Games or toys can help engage their minds. If a dog’s drinking seems obsessive, it could be useful to discuss this with a vet. They can rule out other medical issues and provide solutions.

Why Does My Dog Drink a Lot of Water and Lick Their Paws?

Reasons for dogs drinking more water and licking their paws can be dehydration, allergies, pain and behavioural issues such as anxiety or stress. Additional tests and assessments may need to be done by your veterinarian to determine the exact cause of this behavior of your pet. Based on the assessment, necessary changes may be made to limit this behaviour.

Why Does My Dog Drink a Lot of Water and Urinate Frequently?

Dogs that consume plenty of water usually urinate more often. This happens because their bodies handle large amounts of water through the kidneys, leading to more urine creation. A number of health problems might make a dog feel thirstier and drink extra water.

Conditions like kidney issues, diabetes, or Cushing’s disease could be the cause. Be on the lookout for these signs if you are concerned about your dog’s drinking and urination habits.

Why Is My Dog Drinking So Much Water at Night?

There are several reasons why a dog might drink a lot of water during nighttime. Some might not have enough water available during the day, especially if they are created without a bowl. Dehydration and cognitive issues can also be reasons.

Certain foods or treats high in salt offered at night can increase thirst. Dry air inside the house can cause dogs to drink more as well. This is particularly noticeable when heating systems are used in the home. Consider placing a humidifier where the dog sleeps.

Boredom, anxiety, or stress might contribute to increased water consumption, so ensuring they have plenty of playtime and affection is beneficial.

Visiting the Vet for a Dog’s Unusual Thirst

Recognizing the right time to take a dog to the vet due to excessive thirst can be challenging. Prompt veterinary care is crucial if this thirst is paired with any of the following symptoms: vomiting, diarrhoea, extreme tiredness, inappetence, changes in breathing pattern (unusually heavy and quick breathing), weakness, fainting, presence of blood in urine, and difficulty urinating. These are all signs that may point to a more serious underlying health concern.

If these concerning signs are present and a regular vet is unavailable, heading to an emergency veterinary hospital is advised. The emergency team will likely start with a thorough exam and necessary tests to find out why these symptoms are occurring.

On the other hand, if the dog’s behaviour remains normal—still eating, appearing happy, and staying alert—scheduling a vet appointment during regular hours is acceptable, even if it involves a slight wait.

How Veterinarians Determine Why Dogs Are Very Thirsty

When dogs drink too much water, veterinarians take several steps to find out why. First, they gather details about the dog’s habits and health history. Owners should share any notes on how much water their dog drinks or any strange actions. After gathering details, the vet checks the dog physically.

The veterinarian may then talk with the owner about various tests to find the cause. These tests might include:

Blood Tests

These tests help check enzymes related to the kidneys and liver, monitor sugar levels, and count blood cells. This test will help the veterinarian determine if the cause for excessive thirst points to a more systemic disease such as diabetes insipidus. Other supporting tests are also needed to arrive at a more definitive diagnosis.

Urinalysis

This test examines the urine to determine the kidneys’ performance. It checks for protein, blood, tiny crystals, white blood cells, and bacteria. It can also detect an ongoing infection of the kidneys or the lower urinary tract.

Urine Culture and Sensitivity Test

This test checks for bacteria in the urine and finds the best medicine to treat it. If a bacterial infection is highly likely, this will help identify the bacteria and the best course of treatment.

Medical Imaging

Medical imaging, such as X-rays or ultrasounds, can be used. These machines examine your dog’s organs, such as the kidney and liver, and look for the presence of stones and tumours. All of these can contribute to your dog’s excessive thirst.

ACTH Stimulation Test

This test is used to see if a dog might have Cushing’s disease. Excessive thirst is a common symptom of Cushing’s disease and is due to excessive cortisol. Other tests that can be done to diagnose Cushing’s disease are blood tests to check for hormonal levels.

These steps help the vet discover the reason a dog is drinking too much water.

Help for Dogs Drinking Excessively

Dogs that drink a lot of water may have underlying health issues. The treatment varies depending on the reason behind the increased thirst.

Mild Dehydration

Giving fresh water frequently can help. Severe cases might need more intervention at a vet’s office with fluids given under the skin or into the vein. This is done in the clinic, so prior assessment of the dog’s condition is needed.

Gastrointestinal Issues

If a dog is vomiting or has diarrhoea, the cause needs to be determined. This could involve anti-nausea and anti-diarrheal medication, changes in diet, or fluid therapy. Further tests have to be done for the exact treatment to be given.

High Temperature or Fever

When dogs have a high body temperature due to heat or other causes, they might receive intravenous fluids and cooling measures. For fevers, antibiotics and fluids can be part of the solution.

Kidney Issues

The treatment approach depends on the stage of kidney problems. It might include giving fluids, special diets, medications to increase appetite, protect the stomach, or lower blood pressure, and possibly antibiotics.

Side Effects from Medication

Sometimes, dogs may drink more due to side effects from the medications they are taking. These side effects often decrease over time, usually within a week or two. The vet may change the dosage if the dog urinates too much.

Diabetes Mellitus

Insulin therapy is crucial for managing diabetes in dogs. A vet determines the type and dosage, which may need adjustments in the beginning. If the condition worsens, leading to diabetic ketoacidosis, hospitalisation might be needed.

Diabetes Insipidus

The treatment depends on whether it’s central diabetes insipidus (CDI) or nephrogenic diabetes insipidus (NDI). CDI is treated with a synthetic hormone called desmopressin, while NDI usually involves a medication called hydrochlorothiazide and a low-sodium diet.

Cushing’s Disease

Dogs with this condition are generally treated with trilostane, a medication that helps reduce cortisol production.

Uterine Infections (Pyometra)

The common treatment is surgery to remove the infected uterus. If the infection is open and draining, antibiotics might help, but surgery is often needed to prevent recurrence.

Leptospirosis

This infection may require hospitalisation for intravenous antibiotics and fluids. Early detection and treatment are key to a successful outcome.

Electrolyte Imbalances

Treatment for these can vary a lot depending on the specific imbalance. It might involve hospitalisation and fluid therapy or simply adjusting the dog’s diet and avoiding salty treats.


The right approach to these health issues can significantly improve a dog’s quality of life. Excessive drinking requires immediate veterinary attention since it might indicate serious underlying conditions.

Home Care and Monitoring

When a dog drinks more water than usual, it’s important to ensure it has enough fresh water and track any changes in its drinking patterns. This helps identify potential health issues early and ensures your pet stays healthy.

Ensuring Adequate Water Supply

Ensure your dog always has access to clean, fresh water. Wash their water bowl every day to prevent bacteria buildup, which can make them sick. Consider using a stainless steel or ceramic bowl, as these are easier to keep clean than plastic. Monitor the water level throughout the day, refilling as needed.

In hot weather, dogs may need more water. Make sure you provide extra. If your dog drinks a lot all at once, give smaller amounts more frequently. For busy pet owners, a pet water fountain can be a good choice. It offers fresh water, and many dogs find moving water more appealing.

Observation and Record-keeping

Keep an eye on how much your dog is drinking. Notice if there are any sudden changes. Use a notebook or an app to record daily water intake. Having this record can be very helpful if you need to talk to a vet. Note any other symptoms like changes in appetite, energy, or weight.

Check your dog’s bathroom habits too. Are they urinating more often or having accidents? Changes might be linked to their water intake. Track anything unusual to help your vet find what might be causing the problem. This regular monitoring helps in maintaining your dog’s health.

Dietary Considerations and Hydration

A dog’s hydration can be influenced by its diet. The type and balance of food they eat can play a significant role in how much water they need to drink.

Wet Food vs. Dry Food

Dogs eating wet food may drink less water because wet food contains around 70-80% moisture. This moisture content helps keep them hydrated without needing to drink as much from their water bowl. On the other hand, dry kibble has less water content, usually around 10%.

This means dogs eating dry food might need to drink more to stay properly hydrated. Dog owners should monitor their pets’ water intake with dry food to ensure they are drinking enough. An easy way to enhance dry food diets is to add some water to kibble, increasing their moisture intake.

Balanced Diets and Supplements

A balanced diet is crucial for a dog’s overall health and hydration. Proteins, carbohydrates, fats, vitamins, and minerals should all be part of a dog’s daily food intake.

Supplements can support hydration. Omega-3 fatty acids are often added to enhance skin and coat health, which can indirectly affect hydration. A veterinarian can recommend the right supplements based on a dog’s nutritional needs.

Keeping a close eye on a dog’s eating habits helps maintain proper hydration levels. By providing balanced meals and possibly adding supplements, a dog’s water intake can be regulated effectively.

When to See a Vet

If a dog is drinking more water than usual, it’s important to determine when to call a vet. Some signs indicate an urgent need for professional care, while others suggest routine check-ups.

Emergency Situations

Certain signs indicate that a vet visit should be immediately scheduled. If the dog is panting heavily, vomiting, or showing signs of diarrhoea along with excessive thirst, it requires urgent evaluation.

Extreme lethargy can be another red flag. Increased thirst, combined with unusually low energy, is a sign of possible issues like kidney problems or diabetes.

Also, observe for sudden weight changes or severe weakness. These symptoms, along with high thirst, can point to critical health issues.

Periodic Health Checks

Even without urgent symptoms, regular vet checks are essential. If a dog consistently drinks more water than normal without other symptoms, a vet should check for any underlying issues.

A change in drinking habits might signal conditions that develop over time, including hormonal imbalances or chronic diseases.

Older dogs, in particular, benefit from more frequent check-ups. Ageing dogs may have increased thirst but still require monitoring for long-term health.

Routine exams help in adjusting diet and lifestyle to better manage a dog’s health as it ages. A vet can provide advice tailored to each dog’s needs.

Preventing Hydration Issues

Keeping a dog well-hydrated involves a balanced diet and a regular exercise routine. Over-exertion and heat can lead to excessive thirst, so it’s important to manage these factors.

Regular Exercise and Diet

A dog’s daily routine should include physical activities that suit its age, size, and breed. Exercise helps maintain normal thirst levels by keeping the body’s systems in balance. Activities might include walks, playtime in the yard, or games like fetch.

Diet also plays a crucial role. Providing them with high-quality food rich in nutrients helps regulate thirst. Some dog foods contain high salt levels, which can increase a dog’s water intake. It’s beneficial to check labels and consult with a vet to ensure proper nutrition.

Fresh and clean water should always be available. This encourages dogs to drink appropriately when they need it.

Avoiding Over-Exertion and Heat Stroke

Dogs can dehydrate quickly in hot weather or after intense activities. It’s crucial to let them rest and provide shade, especially on sunny days. Ensure they have access to cool water during these times to prevent overheating.

Observe signs of heat exhaustion like heavy panting, drooling, or lethargy. If these occur, it’s best to move the dog to a cooler place and offer small amounts of water. Walks and playtimes should be scheduled during cooler parts of the day, such as early morning or late afternoon.

Encourage rest periods if they become too active. This helps avoid dehydration and keeps them healthy and safe.