Hydration Is More Than Drinking Water
When we think about keeping our dogs hydrated, most of us picture a bowl filled with fresh water. We fill it, refill it, and may even notice whether our dog seems to be drinking more or less than usual. But the water bowl is only part of the hydration story.
Dogs and cats get water from everything they eat and drink. The moisture naturally present in food, water added to a meal, raw or fresh food, canned food, bone broth, goat milk, and other moisture-rich foods all contribute to total daily water intake.
So instead of only asking, “How much water is my dog drinking?” there may be a better question:
How much moisture is my dog getting throughout the day?
Why Is Hydration So Important?
Water is involved in almost everything happening inside your dog's body. It helps regulate body temperature, supports circulation, carries nutrients throughout the body, aids digestion, lubricates tissues and joints, and helps the kidneys filter waste products and eliminate them through urine. Water also helps maintain the balance of fluids and electrolytes inside and outside the body's cells.
Simply put, water isn't just something dogs need when they're thirsty. It is one of the body's most essential nutrients, and maintaining an appropriate fluid balance allows all of those other systems to do their jobs.
Your Dog Can Eat Their Water
Here's where hydration gets more interesting.
Imagine two dogs of the same size. One eats primarily dry kibble, while the other eats a moisture-rich raw or fresh diet. The kibble-fed dog has to obtain much more of their daily water separately because there is relatively little moisture in dry food. The raw-fed dog is already consuming a significant amount of water with every meal.
That means a dog eating raw or fresh food may visit the water bowl less frequently while still consuming plenty of total moisture. Drinking less from the bowl doesn't necessarily mean the dog is less hydrated; some of their water is simply arriving in a different form.
This doesn't mean every dog needs to eat raw food to be well hydrated. It simply means we can start looking at the food bowl as another opportunity to provide moisture.
If your dog eats kibble, adding water is an easy place to begin. You might also include a little raw or fresh food, spoon in some canned food, pour broth over dinner, or add goat milk or another moisture-rich topper.
Your dog doesn't have to drink all of their water.
They can eat their water, too.
Cats Make Hydration Even More Interesting
Cats deserve special attention when we're talking about hydration.
Cats naturally evolved getting a significant amount of their moisture from the animals they ate, and they don't always compensate for eating a low-moisture diet by simply drinking considerably more water.
Increasing the moisture in a cat's diet can increase total water intake and urine volume while helping to produce more dilute urine. This is one reason dietary moisture receives so much attention when we talk about feline urinary health.
For some cats, the easiest way to get more water into the cat may simply be to put more water into the food. Wet food, raw or fresh food, water added to meals, broth, and other moisture-rich foods can all contribute.
Cats also tend to have opinions about their drinking arrangements. Some prefer running water, some like a wide bowl, and others may drink more when several water sources are available throughout the house.
The important thing is recognizing that hydration doesn't have to come from one particular bowl in one particular way.
Do Some Dogs and Cats Need More Water Than Others?
Water needs aren't identical from one animal to another, and they aren't necessarily the same every day.
A dog spending a summer afternoon hiking, running, or playing outside will have different needs from that same dog spending a cold winter afternoon asleep on the couch.
Hydration becomes particularly important during hot weather and strenuous activity, and when an animal is losing fluid through vomiting or diarrhea. Age, pregnancy, nursing, and certain health conditions can also affect fluid needs.
Kidney disease is a particularly interesting example. Healthy kidneys are very good at conserving water when necessary by concentrating urine. As kidney function declines, that ability can decline too. An animal may begin producing larger amounts of dilute urine and become increasingly thirsty as the body tries to replace that lost water.
This is an important distinction because drinking a lot doesn't necessarily mean an animal is exceptionally well hydrated.
Sometimes increased thirst is the body's attempt to keep up with increased water loss.
That's also why a noticeable change in your dog's or cat's normal drinking habits can be important. Drinking considerably more or less than usual can tell us that something has changed.
Is Plain Water the Best Hydration?
Plain, fresh water is an excellent source of hydration, and we don't need to add anything to it to make water work. But that doesn't mean plain water is our only option.
Bone broth, goat milk, blood, and other food-based liquids can make adding moisture more interesting and appealing. They can also contribute nutrients that plain water doesn't contain.
The important distinction is that these aren't necessarily better at hydrating simply because they contain more ingredients. Sometimes their greatest advantage is that they make consuming additional moisture delicious.
Bone Broth
Bone broth is primarily water, but it can also provide flavor and varying amounts of protein and minerals depending on how it is made.
Pouring a little bone broth over kibble or adding it to a fresh meal is an easy way to increase moisture while adding flavor.
For a dog who isn't particularly enthusiastic about drinking plain water, making moisture more appealing can be valuable. Bone broth also works particularly well when we want to turn hydration into enrichment because it can easily be diluted, poured into toys, or frozen.
Goat Milk
Goat milk provides plenty of moisture, but it is also food. Unlike plain water, it contributes calories, protein, fat, and other nutrients.
It can be poured over meals, served as a small addition to the diet, diluted with water, or incorporated into enrichment.
Rather than thinking of goat milk simply as flavored water, think of it as a nutritious food that happens to bring additional moisture along with it.
What About Blood?
Blood-based food products offer another interesting way to add both nutrition and moisture.
Blood naturally contains water along with protein, iron, and other nutrients, and a blood-based topper can be added directly to food or mixed with additional water.
Again, the purpose isn't to replace the water bowl. It's another opportunity to combine moisture, flavor, variety, and nutrition in your dog's diet.
Do Dogs Need Electrolytes?
We hear so much about electrolytes in human hydration products that it's easy to assume water containing electrolytes must automatically hydrate better.
That's not quite how it works.
Electrolytes are minerals, including sodium, potassium, and chloride, that help regulate fluid balance and support normal nerve, muscle, and cellular function. When significant amounts of fluid are lost, the body may lose electrolytes along with that water. This can happen with substantial vomiting, diarrhea, or other situations involving significant fluid loss.
For a healthy dog going about an ordinary day, however, adding electrolytes doesn't automatically make water better. A dog doesn't necessarily need the canine equivalent of a sports drink simply because they went for a walk or played hard for a while.
A simple way to think about it is this:
Water replaces water, while electrolyte solutions are intended to help replace water plus electrolytes that have been lost.
Electrolytes have an important purpose, but more isn't automatically better.
How Much Water Is Enough?
This seems like it should have a simple answer, but it doesn't.
A commonly used general range for dogs is roughly 40 to 100 milliliters of total water per kilogram of body weight per day, although an individual dog's needs can fall in different places within that range.
Body size matters, but so do temperature, activity, age, health, pregnancy or nursing, and the amount of moisture already contained in the diet. That last factor is particularly easy to overlook.
When we talk about daily water requirements, we're really talking about total water, not simply what disappears from the drinking bowl.
For a dog eating a high-moisture diet, a substantial portion of that total is already arriving in breakfast and dinner.
Rather than becoming overly concerned with calculating every ounce, look at the whole picture. Consider the water your dog drinks, the moisture naturally present in food, water you add to meals, and other liquids or moisture-rich foods consumed during the day.
Fresh water should still always be available so your dog can adjust their own intake as needed.
Can a Dog Drink Too Much Water?
Surprisingly, yes.
Healthy dogs are generally very good at regulating their own water intake, but consuming an enormous amount of water very quickly can be dangerous.
One of the situations where this occasionally happens doesn't involve standing at the water bowl at all.
Think about a dog spending an afternoon retrieving a ball from a lake. Each time the dog swims, grabs the ball, and returns, they may unintentionally swallow water. The same thing can happen to dogs who repeatedly bite at water from a hose or sprinkler.
Taking in a tremendous amount of water very quickly can dilute sodium in the bloodstream, creating a potentially dangerous condition called hyponatremia, sometimes referred to as water intoxication.
Water play is wonderful enrichment and exercise, but breaks during long sessions are important, particularly for dogs who tend to swallow a lot of water while playing.
For cats, suddenly drinking an unusually large amount of water is generally more interesting as a signal that something has changed than as a concern that drinking water itself will damage healthy kidneys.
Sometimes excessive drinking isn't creating the problem;
it's revealing one.
How Can You Tell if Your Dog Is Dehydrated?
There isn't one perfect at-home test for hydration.
You may have heard of gently lifting the skin over a dog's shoulders and watching how quickly it returns to position. Dehydration can reduce skin elasticity, but age, body condition, and individual differences can affect this test, so it shouldn't be used by itself.
The gums can offer another clue. Normally, they should feel moist rather than unusually dry or tacky.
Other possible signs of dehydration include:
- Dry or tacky gums
- Decreased energy or weakness
- Reduced urination or unusually concentrated-looking urine
- Sunken-looking eyes
- Changes in appetite
- Reduced skin elasticity
And don't put too much faith in the nose.
A dry nose by itself doesn't tell us that a dog is dehydrated. A dog's nose can be wet, dry, warm, or cool for many perfectly ordinary reasons.
Instead, look at the whole dog.
You know what your dog's normal eating, drinking, energy, and bathroom habits look like. A significant change from that normal pattern is often much more meaningful than any single hydration trick.
Does Water Temperature Matter?
Cold, room temperature, or warm?
For everyday hydration, there isn't good reason to believe one temperature makes water inherently more hydrating than another. Preference, however, can matter quite a bit.
Some dogs love freshly poured cool water, while another dog may eagerly consume slightly warm broth poured over dinner. Warming broth can also increase its aroma, making it more appealing.
Rather than worrying about finding the perfect temperature, pay attention to what your dog or cat prefers.
The goal is to make consuming enough moisture easy and appealing.
Does Frozen Count?
Absolutely.
Freezing doesn't take away water's ability to contribute to hydration. In fact, freezing gives us another opportunity to combine hydration with enrichment.
Bone broth or goat milk can be frozen into cubes. Broth can be diluted with additional water before freezing. Moisture-rich foods can be spread onto a lick mat or packed into an enrichment toy and frozen.
Some dogs even think ice cubes floating in their water bowl are great entertainment.
The frozen version isn't somehow more hydrating than the liquid version. The advantage is that we've taken something the dog needs—moisture—and turned it into something interesting to lick, investigate, and enjoy.
That's where hydration and enrichment can work beautifully together.
Build a More Moisture-Rich Day
Hydration doesn't have to become another complicated thing to measure and worry about.
Instead, look for simple opportunities to add moisture throughout your dog's normal day.
Start with fresh, appealing water that's always available, and then look at the food bowl. You can add water directly to meals or include raw, fresh, canned, and other moisture-rich foods. Bone broth, goat milk, blood, and other appropriate liquids can add moisture while also bringing flavor, variety, or additional nutrition.
Then you can have some fun with it.
Freeze broth for an afternoon treat, put a moisture-rich mixture onto a lick mat, or add extra liquid to a stuffed enrichment toy. These don't have to become elaborate recipes or another thing on your to-do list.
Even pouring a little water over breakfast counts.
Think of it as moving naturally from:
Drink your water.
Eat your water.
Play with your water.
You don't have to do all three every day. The idea is simply to recognize all the opportunities you have to build moisture into your dog's normal routine.
Hydration Is Bigger Than the Water Bowl
Fresh water should always be available, but hydration doesn't begin and end with filling a bowl.
Water can be drunk, but it can also already be part of food, added to meals, mixed with something delicious, licked from an enrichment toy, or frozen into a treat.
This is particularly helpful when we stop thinking of nutrition as all or nothing.
You don't have to completely change what you feed to increase dietary moisture. If your dog eats kibble, add some water at breakfast. Add a little fresh food or bone broth at dinner. Try goat milk as a topper or freeze some broth for enrichment.
Small additions throughout the day can contribute to the bigger hydration picture.
So instead of focusing only on how often your dog visits the water bowl, look at the whole day.
How much moisture is already in their food? What could you easily add? What does your particular dog enjoy?
Drink your water. Eat your water. Play with your water.
Hydration can be simple, nutritious, and enriching—and it's one more way we can help our dogs feel their best and thrive alongside us.