10 Great Sources of Fiber for Dogs | Great Pet Care (2023)

If you’re like many people, you know fiber is important for a healthy digestive tract and overall wellness. It helps keep you regular, controls blood pressure, and can even regulate blood-sugar levels.

But what about your dog? Does your dog need fiber? Are there natural sources of fiber for dogs? To find out, we asked three veterinarians about their thoughts on fiber for dogs and some of the top sources of this plant-based nutrients for pups.

Do Dogs Need Fiber?

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Fiber is a carbohydrate that plays a beneficial role in gut health. It comes in both soluble (digestible) and insoluble (not digestible) forms, and both have their place in the body’s ecosystem.

“Digestible fiber refers to the fiber that can be broken down into simple molecules that can be eaten by bacteria in the pet’s gut,” says Dr. Sam Kovac of Southern Cross Vet. “Indigestible fiber can be thought of as carbohydrates that offer little nutritional value but massage the gut to reduce inflammation and clean the mucous membranes.”

Basically, fiber helps your dog maintain a healthy balance in the gut, which regulates the bowels and keeps the colon healthy, too.

“The colon loves fiber,” adds Dr. Kathy Boehme of The Drake Center. “Fiber is kind of magical because it can aid in both diarrhea and constipation. There are a lot of puppies with chronic diarrhea, and they respond beautifully to fiber.”

How Much Fiber Do Dogs Need?

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This is where it gets tricky because not every dog needs fiber added to their diets. “A dog doesn’t need a diet loaded with fiber unless they have a lot of gastrointestinal problems,” says Boehme.

According to Dr. Jeff Feinman of Holistic Actions, most dogs get their necessary fiber from their diets. But dogs with digestive problems like diarrhea may benefit from fiber supplementation. “My rescue pup has colitis, which causes diarrhea and even tinges of blood in the [stool]. He does quite well with a little fiber,” Feinman says. “Some dogs need it and some don’t.”

Adding fiber to a dog’s diet isn’t difficult if they do need additional sources. However, it’s good to know that overeating fiber can also upset the gastrointestinal tract. Before adding additional fiber to a dog’s diet, it’s best to consult your veterinarian.

Understanding Fiber in Dog Food

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Visit any pet retailer, and you’ll find shelves of high-fiber dog food. Many of the commercial dog foods designed for weight loss are high in fiber, says Boehm, because fiber helps keep pets fuller longer—so they eat less.

She says there are also fiber-rich foods designed for dogs with colitis or chronic diarrhea, including specialty prescription foods. “These foods are specially formulated by veterinarian nutritionists.”

If you read the label on a high-fiber dog food, you might find beet pulp listed along with things like brown rice, sweet potatoes, and pumpkin. You can also feed some of those things as high-fiber treats in addition to your dog’s regular diet. Just make sure to discuss these additions with your veterinarians before giving them to your pup.

Fiber for Dogs: 10 Healthy Sources

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Whether your pet has some mild digestive issues, your vet suggests a fiber boost, or you just want to provide some occasional fiber-focused snacks to keep your dog full and focused, there are lots of sources to consider.

Let’s look at some of the most popular sources of fiber for dogs that are easy to add to your dog’s diet.

(Video) Best Sources Of Fiber For Dogs

Beet Pulp

Beet pulp has been characterized as a filler product in some pet nutrition circles. But it’s a great source of fiber for dogs. Beet pulp is a colorless and stringy byproduct of sugar beet processing and easily digested. “Beet pulp is common in many pet foods,” says Boehme. You’ll find it in many high-fiber dog foods.


Turns out, this fall favorite is a tasty source of healthy fiber for dogs. You can find it year-round in grocery stores—just be sure you buy plain pureed pumpkin and not pumpkin pie filling. You can feed fresh pumpkin, too.

When feeding pumpkin to dogs, it’s better to start small and see how they react. Feinman recommends “a teaspoon or less.”

Ground Flaxseed

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Flaxseed is a rich source of omega 3 fatty acids, which means it’s good for your dog’s skin, coat, brain, and overall nervous system. Flaxseed is also a great source of dietary fiber and antioxidants and can help intestinal health, according to the Flax Council of Canada.

There are many ways you can add flaxseed meal or ground flaxseeds to your dog’s diet. You can sprinkle it on your dog’s food, mix it with peanut butter and roll into balls for treats, or mix with a bit of plain, organic yogurt. It’s best if the flaxseeds are ground right before using. As with any new food, start with a small amount—a teaspoon is plenty as a starting point.


If you’re a sushi-fan, you might think of kelp as the seaweed wrapped around your sushi rolls. Of course, the Japanese have long known of its health benefits. Kelp is high in iron, and as it turns out, it’s also a high-fiber food that’s safe for pups.


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If your dog likes green lettuce, then it can be a good source of fiber—even if its high water content doesn’t provide a lot of additional nutrients. You’ll want to chop it up so it’s easier to eat and make sure it doesn’t have any dressing or other elements that could be harmful to your pup. Iceberg lettuce might taste good, but it has very little fiber.


Many dogs love chomping on apple slices as a high-fiber treat. As a bonus, apples are low in calories and help clean canine teeth too. Try offering your pup a slice of apple and see how they like it. As always, keep the pieces proportionate with your dog’s size and never give your dog the seeds or core.


Many pet parents buy bags of baby carrots to feed as treats. Like apples, they’re low in calories, which is perfect for pups who’d benefit from a bit of weight loss and are high in fiber to keep your pup fuller longer. A study also revealed that feeding dogs raw carrots can help improve a dog’s liver and kidney function.

Green Beans

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Consider green beans as another addition to the veggie selection for your pet. They’re also low calorie and full of fiber for a healthy, high-fiber dog treat.

Brown Rice

Recent grain-free trends aside, brown rice turns up in many high-fiber dog foods because it’s a great fiber source, according to a 2016 research study. It also mixes well with veggies like carrots and green beans.

Strawberries and Blueberries

Got fresh berries? Your pup can enjoy fresh strawberries and blueberries along with you. Just rinse them and eat. These natural sources of fiber for dogs can also give your pet an antioxidant boost. A study of sled dogs who were fed blueberries after exercise had elevated antioxidant levels in their blood compared to a control group that was not fed berries.

Just don’t overdo the berries, since fruits like strawberries and blueberries have natural sugar content. Too much won’t be good for your dog.

Fiber Supplements for Dogs

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Adding fruits, veggies, or brown rice to your dog’s diet may not provide them with all the fiber they need—especially if they have digestive problems. If your pup has irregular bowels, is obese, or has diabetes, they may need more fiber than can be found in fresh food.

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“I like the idea of feeding fiber in the form of fruits and veggies, but the amount should not comprise more than 10 percent of the diet so that you do not unbalance the diet,” says Boehme. “If it is not possible to do this, then they would need an additional supplement.”

Fiber Supplements for Dogs: Our Favorite Picks

All featured products are chosen at the discretion of the author. However, Great Pet Care may make a small affiliate commission if you click through and make a purchase.

If your dog’s digestive system needs a fiber boost, these products can help balance gut health, firm up loose stool, and keep your canine regular.

Our Picks

Great Poop Digestive Enzymes Support for Dogs

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Here’s the thing—you don’t want your dog’s poop to be good. You want it to be GREAT. And so do we. In fact, a dog’s poop says a lot about their overall health and wellness. That’s why our team of pet experts created an easy-to-use, high-fiber supplement that improves stool quality and increases overall gut health. These tasty, chicken-flavored soft chews can help firm up loose stools (making cleanup easier) and relieve symptoms of gas, constipation, and bloating. Key ingredients include digestive enzymes, probiotics, and oat flour and flaxseed for a fiber boost.


  • 120 soft chews per container.
  • A multifunctional product to help with a variety of digestive issues.
  • Formulated with high-quality ingredients including essential digestive enzymes, probiotics, and fiber.
  • Flavored like chicken, so dogs will eat them easily.
  • Made in the USA.
  • No preservatives or fillers.

Things to Consider

  • Only one flavor currently available.
  • Dogs over 26 pounds will require more than one chew per serving.

Meaningful Tree Super Pet Total Health

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The folks at Meaningful Tree developed a proprietary way to combineall of the health benefitsof extra virgin olive oil with acacia fiber, a natural and effective prebiotic. The result is an easy-to-use herbal supplement powder that supports your pet’s overall health whileenhancing the fiber content of your pet’s food.


(Video) High Fiber Dog Food Recipe

  • Supports gut health and heart health while also promoting skin, coat and joint health
  • Made in the USA with sustainable ingredients
  • Fully traceable product

Things to Consider

  • Recommended serving is 1/2 scoop for dogs under 30 pounds and 1 full scoop for dogs 30 pounds and over
  • 30 servings per container
  • As with any new herbal supplement, speak to your vet first before adding to your pet’s diet

NaturVet No Scoot Plus Pumpkin

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Dogs with digestive troubles may also suffer from anal gland problems, which usually make themselves known when your dog starts scooting across the floor. But these powerful and palatable “no scoot” soft chews from NaturVet are designed to help support healthyanal gland and sac function while also getting your pup’s bowels back on track. These tasty morsels feature a proprietary blend ofbeet pulp and psyllium husk, dandelion root and pumpkin powder.


  • Made in the USA with non-GMO ingredients
  • Displays the NASC (National Animal Supplement Council) Quality Seal
  • Wheat-free
  • Available in a 30- or 60-day supply (60 or 120 chews)

Things to Consider

  • Recommends giving one soft chew per 20 pounds of body weight twice daily, so your supply will not last as long with a large breed dog
  • You’ll need to ensure your dog drinks plenty of water, given the increase in daily fiber
  • Some reviewers claim their dog didn’t enjoy the taste of the new formula as much as the original

Native Pet Organic Pumpkin Fiber for Dogs

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Another pumpkin powerhouse, this fiber powder is very easy to use. Just mix it with water and create a delicious (and healthy!) pumpkin puree. This is a nice alternative to buying canned pumpkin. It has a longer shelf life and can be used as needed, where canned pumpkin will need to be tossed soon after opening. This formula contains only three organic ingredients and will help to combat diarrhea and loose stools.


  • Only three simple, organic ingredients.
  • Most customers see results in 2-4 days.
  • Can be mixed with water or sprinkled over food.
  • Average shelf life is 22 months!

Things to Consider

  • It’s slightly pricey for an 8oz can. But, like we said, it lasts a long time.
  • Some pet owners said it was a bit clumpy when mixed with water.

Virbac Vetasyl Fiber Capsules

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For dog constipation relief and anal gland problems, these fiber capsules from Virbac are gentle and effective. They are formulated with natural sources of fiber including psyllium and barley. The jar contains 500 capsules and they are simple to use. Just break them open and sprinkle the powder over your pup’s food.


  • Works for both dogs and cats, so great for multi-pet households.
  • Contains no salts or sugars.
  • Formulated with natural fiber sources.
  • 500 capsules in a bottle is a nice amount for the price.

Things to Consider

  • The capsules have to be broken open and sprinkled over food, which may not be appealing for picky eaters.
  • Some reviewers didn’t like the odor of this product.

Before adding fiber supplements to your dog’s diet, make sure to talk to your veterinarian about the kind and type that will best benefit your pet.

Can Dogs Have Metamucil?

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When people think of fiber Metamucil—a popular fiber supplement that is mixed with water—comes to mind. And if you’re mixing up a glass for yourself, you might be wondering whether your dog can experience the same benefits from Metamucil.

Turns out, a small amount should be okay—just make sure to read the label carefully.

“A pinch of Metamucil can be helpful for dogs,” Feinman says. “Just be sure it’s only Metamucil and not filled with artificial sweeteners like xylitol as those are dangerous for dogs.”

What to Do If You Think Your Dog Needs More Fiber

As you can see, there are many healthy sources of fiber for dogs. From feeding apples and carrots as fiber-rich dog treats to drizzling flaxseed or wheat germ oil over your pet’s food, your dog may love these additions.

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However, like every health question, there is no one-size-fits-all solution. “It depends on the individual,” Feinman says.

If you’re worried about your dog’s digestive health and you think more fiber may help, talk with your veterinarian to discuss your dog’s fiber needs.


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