Just like you, your dog can get dehydrated, and sometimes more easily than you do, since they spend all day in a fur coat. Dehydration happens when your dog loses more fluid than they take in, and it can range from mild to serious. Your pup loses water all day long through panting, breathing, and bathroom breaks, and they make up for it by eating and drinking.

When they can't quite keep up, dehydration sets in. Knowing the warning signs, plus two quick checks you can do at home, helps you catch it early and keep your best friend feeling their best.

Signs of Dehydration in Dogs

A little panting is normal after your dog has been running and playing, so it can be tricky to tell when it crosses into something more serious.

Keep an eye out for these common signs of dehydration in dogs:

Dry, sticky, or tacky gums
Thick, ropey saliva
Loss of skin elasticity
Dry nose
Loss of appetite
Low energy or lethargy
Excessive panting
Sunken eyes
Vomiting or diarrhea

Milder signs like tacky gums often show up first, while sunken eyes, weakness, or collapse point to more serious dehydration. If you spot several of these, or your pup just seems to be getting worse, call your vet.

How to Check Your Dog for Dehydration at Home

Two quick checks can help you get a feel for your dog's hydration between vet visits.

The skin tent test: Gently lift the loose skin between your dog's shoulder blades, then let go. In a well-hydrated pup, it springs right back. If the skin is slow to settle or stays "tented," that's a sign your dog may be dehydrated. It helps to try this when your dog is healthy, so you know what normal feels like, especially for wrinkly breeds whose skin is naturally looser.
The gum check: Your dog's gums should feel moist and slippery. Press a finger gently against them, then lift it off. The spot should turn white for a moment and bounce back to pink almost right away. Dry or tacky gums, or color that's slow to return, can be a warning sign.

These checks give you helpful clues, not a diagnosis, so when in doubt, your vet is always your best call.

What Causes Dehydration in Dogs

Heat is the cause you probably think of first, but it's far from the only one.

Your dog can get dehydrated from:

Hot weather or too much activity, since dogs cool off mainly by panting, which speeds up how fast they lose water
Vomiting or diarrhea, which drains fluids quickly
Not drinking enough, whether the bowl ran dry or your pup is just a picky drinker
Illness or fever, including ongoing conditions like kidney disease or diabetes

Some dogs are also more likely to get dehydrated than others. If you have a puppy, a senior dog, a small breed, or a nursing mom, it's worth keeping an extra close eye on their water intake.

What to Do If Your Dog Is Dehydrated

If your dog is mildly dehydrated, offer them small amounts of cool, fresh water and let them rest in a shaded or air-conditioned area. Try not to let them gulp down a whole bowlful at once, since drinking too fast can upset their stomach and lead to vomiting.

If your pup is very lethargic, keeps vomiting, has diarrhea, won't drink, or shows signs of severe dehydration like sunken eyes or weakness, treat it as an emergency and get to your vet right away. Your vet can give fluids under the skin or through an IV to quickly replace what your dog lost, and help figure out what caused the dehydration in the first place.

How Much Water Does Your Dog Need?

As a general guide, your dog needs about 1 ounce of water per pound of body weight each day.

So if you have a 25-pound pup, that's roughly 25 ounces, a little over 3 cups. That number climbs with heat, exercise, or illness, so think of it as a starting point rather than a hard rule.

If you notice your dog suddenly drinking way more or way less than usual, mention it to your vet, since big changes can be a sign that something else is going on.

How to Prevent Dehydration

Keeping your pup hydrated mostly comes down to making water easy to reach and easy to want:

Always keep fresh, clean water available, and top off the bowl throughout the day.
Bring water on walks, hikes, and car rides, along with a collapsible bowl.
Add water or a splash of broth to meals, or mix in some wet food, if your dog is a picky drinker.
Offer shade and go easy on hard play during peak heat, usually late morning through late afternoon.
Try ice cubes or dog-safe frozen treats as a fun way to sneak in extra fluids.

Keeping Campers Happy and Hydrated at Camp Bow Wow®

At Camp Bow Wow®, your dog's health and comfort are always top of mind. Fresh water is available all day, and our Certified Camp Counselors® keep a close watch on every Camper during play, making sure they take water breaks and rest when needed.

So whether it's a hot summer afternoon or a busy day of romping with new friends, your pup stays happy, safe, and hydrated. Find your local Camp Bow Wow and book a day of play!

Frequently Asked Questions

How Do You Rehydrate a Dog?

If your dog is mildly dehydrated, offer small amounts of cool, fresh water often rather than a single big bowl, and let them rest in a cool place. If your pup won't drink, keeps vomiting, or seems weak or very lethargic, skip the home fixes and head to your vet, since severe dehydration needs fluids given under the skin or through an IV.

Do Dogs Act Weird When Dehydrated?

They can. A dehydrated dog often seems tired or sluggish, loses interest in food and play, and may pant more than usual. Since these changes can creep in slowly, trust your gut.

If your pup just isn't acting like themselves, check their gums and skin, and give your vet a call if something feels off.

How Quickly Can Your Dog Rehydrate?

It depends on how dehydrated they are and why. A mildly dehydrated pup may perk up within a few hours of drinking, while a dog getting IV fluids at the vet for something more serious may need longer and a little monitoring. Because dehydration is often a sign of something else, prompt vet care is the safest way to get your dog back to normal.

Signs Your Dog is Dehydrated and What to Do

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