dog drinking water

How Long Can A Dog Go Without Water (Solved & Explained)

In most cases, dogs are capable of going without water for a couple of days. Even though it’s not an absolute rule, the longest time a dog can go without drinking water is three days.

However, it is important to bear in mind that there’s a huge difference between being in good physical shape and still being in need of drinking water. A dog that has had no water for more than 72 hours is going to need immediate medical care to avoid any serious damage to its body.

The kidneys of an animal’s kidney function are very similar to human’s. They can store enough water to last for several days. If a dog goes for days without getting enough water, it could eventually lead to renal failure.

Dehydration can occur due to various reasons. This is especially true during hot summer months when the animal’s skin is sweating excessively. If the animal spends long periods of time out in the sun without protection, it can be prone to dehydration.

It may also happen if a dog goes through diarrhea. When the digestive system has to work overtime to break down the food it consumes, it causes the kidneys to shut down for a while, leading to dehydration.

It’s also important to ensure that the dog is getting enough water intake. An owner should make sure to keep a close watch on its intake to ensure that it doesn’t become dehydrated. It’s also important that they keep up with regular bathing sessions to help prevent bacteria from collecting on the dog’s fur.

In order to prevent dehydration, it’s also important to make sure that the dog’s diet contains ample amount of water. Water helps in flushing out toxins and impurities from the body. Foods rich in vitamins A, C, and E also help to maintain a dog’s good health. 

Signs of Dehydration

You’re sure to be aware that some breeds of dog can become dehydrated quickly, particularly the older ones. Signs your dog is dehydrated can include the need to urinate more frequently, loss of appetite, lack of interest in food or water, vomiting and diarrhea. A dog who is becoming dehydrated may also suffer from swollen limbs, an appearance of liver or kidney damage, or even seizures.

See a Vet

To determine if your dog is dehydrated, you should take him to the vet. He or she will perform an urinalysis on your dog to see how close his or her body is to dehydration. The vet can also perform a blood test to look for other symptoms. You’ll have to take your dog to a vet as soon as possible to avoid dehydration getting worse. It’s a good idea to have your dog tested for other health problems as well.

Can Affect Health

Dehydration can lead to a number of illnesses in your dog. It can cause nausea, vomiting, and diarrhea, which may also lead to loss of appetite. Dehydration also affects a dog’s blood sugar levels. A high blood sugar level can lead to diabetic conditions and seizures in dogs with diabetes.

Affect Kidneys

Some dogs with allergies are allergic to the proteins in the urine of dogs with high levels of uric acid. Because uric acid in dogs can be very high, it can clog the kidneys of your dog. Your vet may prescribe medications to reduce uric acid in your dog. If your dog’s kidneys aren’t working properly, they may also be unable to excrete enough bile so that the liver will function properly.

How To Prevent Dehydration

There is also the simple way in which you can prevent dehydration. If you constantly keep your dog’s drinking water at a certain level and make sure that they’re getting sufficient amount of exercise, the chances of them getting dehydrated are greatly reduced. In fact, if you can help them, it is highly recommended that you take your dog for walks and let them drink plenty of water along the way.

How Much Water Should Dogs Drink?

A dog’s body weight is made up of more than 70% water, and it is recommended that a dog drinks approximately one ounce of water per pound of body weight to stay hydrated. So this would mean that for a 20lb dog should consume about 20 oz of water daily. The bigger the dog the more water they will need to stay hydrated. It is also common for a dog to drink more if he is given salty foods.


It is also important to watch for changes in your dog’s weight. A dog’s weight can fluctuate, and you may want to keep an eye on how much your dog weighs. You may want to see a veterinarian if you notice a change in your pet’s weight. Your vet can help you determine if your dog is suffering from dehydration or another health problem.

Dog dehydration can also be caused by other things, such as extreme heat or cold weather. In these cases, you should keep your dog out of the sun and if it is freezing or hot outside, you should make sure your dog stays indoors at all times.

Remember that dog dehydration can be very dangerous to your dog’s health. If you notice anything out of the ordinary about your dog’s behavior, you should get it checked out immediately to ensure that he or she is healthy.

If you have any concerns that your dog may be suffering from dehydration, contact your vet right away. There are plenty of medications available that can help your dog to stay hydrated, and your vet can help you decide which one will work best for your pet.

Your vet will also be able to give you information on how to avoid dehydration. If you notice that your dog seems lethargic or uncomfortable, you should contact your vet to get help immediately.

Frequently Asked Questions

How Long can a puppy go without water?

The survival factors that determine the longevity of a puppy without water are determined by the needs of the dog. These factors affect the body’s ability to take or need less water. Water plays an important part in the body’s activity and growth.

Without it, the puppy is at risk for dehydration and even hypoglycemia. It is recommended that you allow your puppy the option of drinking water if it chooses to do so. 

Having an adequate water supply is essential for the proper functioning of your dog. A puppy without water will not survive. This includes periods of time between feedings.

They will also become weak and sick. Lack of water will also impact their appetite. It is important that you keep a water supply near at hand to ensure that the dog has access to water whenever they feel thirsty.


  • Karin S

    Welcome to All About My Small Dog, where my love for small dogs and years of hands-on experience meet your need for trusted information. As a dedicated small dog enthusiast and pet parent, I'm deeply committed to sharing expert insights, reliable advice, and a community of support. Every blog you read here is crafted with the utmost care, guided by my passion and expertise. You can trust that you're in the right place for valuable insights and a warm community that understands the unique joys and challenges of small dog ownership. Together, we'll make sure your small dog's world is filled with love, care, and knowledge.