How Long Can A Dog Go Without Water?

11 Minute Read
Updated April 24, 2021

When you're out and about with your dog, or if your dog is waiting not-so-patiently at home for you, it's important to make sure they are properly hydrated. Find out just how long can a dog go without water.

Learn about how much water dogs need each day, how long your dog can safely go without water, why your pup won’t drink water, signs she may be struggling with dehydration, and what you can do to keep her healthy and hydrated all summer.

Keeping your pet hydrated is vital to his health, just as it is to your own. He should always have a fresh, clean supply of drinking water available to him. But what happens when your dog isn’t drinking enough water?

Can dogs get dehydrated, like humans do? How long can a dog go without water? And why won’t your dog drink water, even when it’s offered to her?

Read on to learn tips about how much water your dog should drink and how to tell if your dog is dehydrated.

How Much Water Should Dogs Drink?

How Much Water Should Dogs Drink

Water makes up more than 70% of your dog’s body by weight, so your dog needs to maintain this water content by consuming plenty of water every day. We know the recommendation for us is eight 8-ounce glasses of water a day, but what about your dog?

A good guideline to follow for dogs is about an ounce of water for every pound of body weight. So, a 25 lbs. dog needs about 25 oz. of water (or 3 cups), while a 75 lbs. dog needs almost 2 litres of water every day.

This may seem like a lot, but remember, this is spread out across their whole day, and, as we will learn later, there are plenty of other ways to supplement your dog’s hydration needs than simply offering him cold, refreshing water.

Help! My puppy is not drinking enough water!

If it seems like your puppy is not drinking enough water, keep in mind that puppies have a different need for water than adult dogs.

As they are being weaned and transitioning to solid food, puppies need to drink around half a cup of water every other hour or so to replace the milk they’re not getting and to keep themselves hydrated.

Once your puppy is weaned, she will begin to need more water than before, ultimately requiring as much water as a fully-grown doggo.

Puppies also learn by repetition, so even though they may not go to the water bowl on their own as often as they should, you should keep bringing them back to the bowl frequently throughout the day to build the habit of drinking water more regularly. 

This will, of course, affect their bathroom needs, so if you are potty training your puppy, this will mean that consistent bathroom breaks will be needed. 

Warning Signs That Your Dog is Dehydrated


How can you be sure that your dog is getting enough water? It’s not possible to measure out and keep track of how much water your dog is drinking every minute of the day.

Cases of extreme dehydration are typically associated with illness or overheating, but a consistent state of mild dehydration can have risks too. It’s helpful to be able to identify signs of dehydration in your pet so that you can take action.

If you’re worried that your dog may be dehydrated, here are a few areas to check:

Dry Nose

Your dog’s nose is naturally moist. A dry nose doesn’t necessarily mean dehydration, but it can be an indicator when combined with other signs. A dog nose that is dry, cracked, or flaky could indicate that he's dehydrated.

Other reasons for a dry nose could include allergies, air quality, or irritation. In addition to keeping your pooch properly hydrated, try a topical treatment to moisten and condition the nose like Parker & Co. Snout Balm

Dry, Tacky Gums and Pasty Saliva

Another naturally moist area of your dog is his gums. Lift your dog’s lips and touch your finger to his gums to see if they are dry or tacky. If so, then he needs a drink soon.

It's common for gums and noses to be dry after a nap. Dry mouth is not uncommon during rest cycles, especially if your dog sleeps with his mouth open. Don't panic if your dog is looking a little parched just after waking up from a puppy dream, just encourage him to head to the water dish for a quick drink.

Another indication is the viscosity of your dog’s saliva. If your dog isn’t drinking enough water, his saliva will become thick and pasty as a response.

Low Skin Elasticity

Have you ever lifted the skin on your finger joints to check for dehydration? The elasticity of your dog’s skin is the best way to determine moderate dehydration. Grab a handful of skin from their back and gently lift. Release the skin and take note of how long it takes to fall back into place. If the skin lingers in position, like a little skin mohawk, then your dog needs a drink pretty badly.

Keep in mind that this test is not as effective for breeds that have a lot of extra skin. Doing this test on a Sharpe, Bulldog, or another really wrinkly breed will likely give you a false positive

Dark Yellow Pee, or Very Little Pee

The colour of your dog’s pee can indicate dehydration too. Light yellow and pale urine is typically a good sign of proper hydration. The darker the yellow, the less hydrated your dog is.

This can also be indicative of other health concerns, though, so if your dog’s urine colour is unaffected by better hydration, then it’s time to call the vet to rule out other issues.

Low Energy Level and/or Lethargy

If your doggo is dehydrated, he won’t have the energy to be as playful as he typically would be. Just like you, the lack of water will sap him of energy and leave him feeling weak and tired, interested primarily in snoozing and being generally lazy.

Loss of Appetite

Have you ever tried to swallow a dry piece of toast without any coffee, water, milk, or juice to wash it down? It was likely not only very difficult but also uncomfortable and even painful.

Dehydration can make swallowing food too painful for your doggo, spurring him to avoid eating altogether. Your dog’s digestive system requires water to process the food he has eaten, which would also make him disinterested in eating.

Sunken, Dry Eyes

Your dog’s eyes are made primarily of water, as are the muscles behind her eyes. When she is dehydrated, these muscles and the eyes themselves are too dry to rotate properly, causing them to look sunken.

Also, when your doggo hasn’t been drinking enough water, the delicate skin of her eyelids is not moisturized, so they cannot naturally clean her eyes, making them dry and irritated.

How Long Can a Dog Safely Go Without Water?


Your doggo is a beloved member of your family, and just like the rest of your family, your dog needs plenty of water every day. But we’ve all been in a mad rush to work and ran out the door without refilling our dog’s water bowl. Sometimes, too, due to illness, lifestyle changes, or general anxiety, your dog may simply be uninterested in drinking water. Let’s talk about how long your dog can safely go without water.

When it comes to determining how long your doggo can go without water, there is no one-size-fits-all answer. Here are a few factors to consider:

  • Age. Your adult dog needs much more water per day than, say, a puppy does, so your puppy can do without water for much longer than your adult dog. Your elderly canine companion likely has health issues that would be even further exacerbated by prolonged dehydration.
  • Health. If your canine companion has health issues, it’s important to make sure they drink water every day, as dehydration affects every organ in the body, intensifying any illness. Also, it goes without saying that a dog who is pregnant will need to drink plenty of water every day.
  • Weather conditions. If you live in a mild climate, your dog will be fine without water for longer than that same dog, living in a hot, dry, or humid environment. Remember: heat means more panting, which means more water loss.
  • Breed. A big, bushy dog with a heavy coat will need water more often than, say, a hairless breed would.
  • Overall lifestyle. If your dog is a lazy house-pup (we love them!), she may be able to endure a longer time period than a more active dog would. Generally speaking, the more active your dog is, the more water he will need and the worse off he will be without water for long periods of time.

Under normal circumstances, a dog can go 6-10 hours without water without any ill effects. If you forget to top up his water bowl before leaving for work, or if your dog knocks his bowl over while you’re gone, don’t panic. If he is indoors, cool, and in good health, he will be fine.

The general rule of thumb is that your dog can survive approximately 72 hours without water, but after the first 24 the effects of dehydration will start to present. Beyond that, you could be causing irreparable damage. We need to be as serious about keeping our pups healthy as we are about keeping ourselves and our families healthy.

Though some have suggested withholding water to stop dogs from urinating in the house or in their crate all day when their owner is at work, it is important to never intentionally leave your dog without water, for any reason.

What Happens When Your dogs Get Dehydrated

Let's take a look at what a dog would experience each day as he becomes more and more dehydrated.

Day 1

After a full day without water, your dog may have less energy than usual. As he starts to feel more and more dehydrated, you may also notice him panting heavier. This is how your dog cools down.

Offer fresh, cool water and moisture-rich food frequently and in small doses. This will help to rehydrate him and help to cool his body gradually.

Day 2

Two full days without water will lead to more severe symptoms of dehydration. You will likely notice some weakness and behavioural issues. Mobility may be limited due to lethargy, so it’s best to keep your dog in a limited, calm, and quiet area of the house while you rehydrate him.

Bring water and moisture-rich foods to him to encourage him to drink. You can use a clean, soaked washcloth to dab water onto his gums. This may also encourage him to drink a little.

Day 3

By the third day with no water or any moisture-rich food, your dog is in critical condition. To safely rehydrate your dog, he will need IV fluids. In this crucial state, your dog will be very lethargic and weak. He will likely not be able to walk very far or at all.

Immediate intervention is needed to prevent organ damage and even death. If your dog is flat and unable to drink, you need to get him to a vet, asap. If your dog has experienced vomiting or diarrhea during this time, then he is seriously dehydrated by this point and will need medical attention.

Why Won't My Dog Drink Water?

Healthy dogs are generally pretty good at regulating their water intake. When they are thirsty, they instinctively seek out water. But why won’t my dog won’t drink water, you may be wondering.

It’s possible that an underlying issue is at play. It could be as simple as an upset tummy, or as serious as an intestinal or urinary blockage.

Another common reason why your dog won’t drink water is because of some sort of injury to his mouth. If his mouth, tongue, gums, or teeth are sore, he may not be interested in either eating or drinking.

If you notice that your dog is not drinking or eating, then you need to take action, particularly if your dog has been vomiting or has experienced consistent diarrhea.

This is especially dangerous because he is quickly losing moisture on top of not consuming enough water or food to replenish that loss.

Choose the Right Bowl

It may seem silly that something as simple as the shape, size, or material of your dog's water bowl may deter them from drinking, but it can! Some dogs are pickier than others, so the style of bowl you choose may not be to their liking.

The bowl may be too deep, leaving them with no option but to dunk their face into the bowl, or the bowl may be flat and wide, causing them to dip their ears in the water every time they take a sip. 

Material can be a factor too. Plastic bowls easily scratch and crack, allowing odour-causing bacteria to build up. Try switching to a metal or ceramic to keep the water cleaner and more refreshing. 

Here are few options you can try:

Lastly, if you find your dog has no qualms about dunking his head in the toilet, but won't drink from his water bowl, then you are better off investing in a good quality dog water fountain. 

This will keep the water moving, dropping the temperature by a degree or two. While this may not seem like much, it might be just enough to make the water more appetizing for your doggo. 

Shop Pioneer Pet Stainless Steel Fountain

Other Ways to Keep Your Doggo Hydrated


Keeping your pet hydrated isn’t always as simple as leaving out fresh, clean water. If your dog doesn’t drink enough water on his own, for one reason or another, consider other ways to get moisture into his body.

Moisture-Rich Dog Food

If your dog won’t or can’t drink the recommended amount of water, then you should try to get your dog to eat moisture-rich foods to prevent dehydration. Canned, juicy dog food is a great way to hydrate your dog while keeping his diet complete and balanced.

Canned foods can be fed with kibble diets, or as a meal in themselves. Check out some of our favourite wet foods for dogs:

If you don’t want to make significant dietary changes, then consider a food topper or treat that can offer extra moisture to your dog. Fresh fruits and veggies are an excellent source of essential nutrients and are also loaded with moisture. Just make sure you choose produce that is safe for dogs.

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Check out our other fun and delicious dog treat recipes to help keep your dog hydrated and his taste buds happy.

Tasty Water Alternatives

Another way to get your dog to drink more is to offer beverages that have a little more flavour. Try pouring some raw goat’s milk into his food, or making some dog popsicles out of bone broth. These tasty snacks are refreshing and full of moisture—and they’re great ways to sneakily keep your dog hydrated.

For a hot day, or when your doggo will be spending more time outside, consider offering her frozen treats, like the long-lasting puzzle treat, stuffed Kong.

Shop Kong Dog Toys

Keep in mind that these doggy drinks should never wholly replace fresh, clean water. It’s best to feed these liquids with meals, so you don’t discourage your dog’s regular drinking habits.

Your canine companion needs water, just like you do. A dehydrated doggo is not only likely to be down in the dumps, he is at risk for serious illness and even death. With these tips and tricks, you can be ahead of the game in ensuring that your dog is hydrated, happy, and healthy.

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Written by

Krystn Janisse

Krystn is a passionate pet nutrition enthusiast. She has worked in the pet industry for over a decade and loves to share her passion for animal welfare with others. She loves all animals but is currently channeling some crazy cat lady vibes with her four lovable, but rebellious cats.


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