Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Do Dogs Need Grain in Their Diet? Vet-Approved Facts & FAQ

Share

woman buying dog food
Overall, it is best for dogs to have some grain in their diet unless they have a serious allergy to grains. Some breeds need grains more than others.

According to Dr. Jennifer Adolphe, a Ph.D. pet nutritionist for the pet food brand, Petcurean, grains are an excellent source of vitamins, minerals, and fibers1. They also add necessary carbohydrates. Dr. Adolphe states that each grain has its own nutritional profile; therefore, some grains may be better for your dog than others. Thus, it is best to speak with your veterinarian and decide which grains would be most beneficial for your specific dog.

Dr. Susan G. Wynn, a veterinary nutritionist at BluePearl Georgia Veterinary Specialist, also agrees that grains are a necessary ingredient, and adds that whole grains, which contain all plant parts, are the best because they are the most unprocessed grains available2.

divider single dog paw oct 2024

Why Are There Grain-Free Dog Foods?

Grain-free and gluten-free diets are becoming very popular among humans, especially those with allergies or sensitivities. Research shows that close to 18 million Americans have sensitivities to gluten.

Fortunately, this is an extremely rare condition in our pets. Most times when our dogs or cats have food allergies, it is a protein allergy. A dog’s diet should be based mostly on high-quality protein and fat but should also include some healthy carbohydrates which could be sourced from grains. Therefore, unless there is a specific grain allergy that your veterinarian has determined, your dog should not need a grain-free diet. What is really important is to pay attention to the macronutrient composition of their diet and avoid excessive carbohydrates in their food.

Bear in mind that, in rare cases, pets may be allergic to a specific grain, as well as other plant-sourced ingredients like potatoes or carrots, but this is much less likely than an animal protein allergy. The top five allergens in dog foods are beef, dairy, wheat, chicken, and eggs.

Unfortunately, many pet food companies have jumped on the grain-free, gluten-free bandwagon, and advertise their foods as a sure way to end your pet’s allergies. We are now learning that this change in diet can actually be harmful to your dog.

pouring dog food in food bowl
Image Credit: Rawpixel.com, Shutterstock

What Started Grain-Free Diets in Dogs?

A pet food contamination tragedy gave grain a bad name. In 2007, a bad batch of wheat gluten imported from China and contaminated with industrial chemicals as a way to falsely enhance protein level readings, adversely affected dogs by causing kidney damage when ingested. Unfortunately, many pets became ill, and several died from it.

Even though it was not the grain itself but, rather, the chemicals added to it, people remembered the grain and made a decision to avoid it.  This, along with the gluten-free trend for humans, began the race to develop dog foods that were still nutritional and affordable without grains.

Can You Feed Your Dog a Grain-Free Diet if They Don’t Have Grain Allergies?

Feeding a grain-free diet to dogs can be harmful, especially when the diets are loaded of legumes. Links between canine heart disease and diet, specifically grain-free dog food diets, are currently being investigated.

According to Dr. Jerry Klein, Chief Veterinary Officer of the AKC, “The FDA is investigating a potential dietary link between canine dilated cardiomyopathy (DCM) and dogs eating certain grain-free dog foods. The foods of concern are those containing legumes such as peas or lentils, other legume seeds, or potatoes listed as primary ingredients. The FDA began investigating this matter after it received reports of DCM in dogs that had been eating these diets for a period of months to years. DCM itself is not considered rare in dogs, but these reports are unusual because the disease occurred in breeds of dogs not typically prone to the disease.”

It is therefore always recommended to consult a veterinarian before you will try to add any grains or legumes into your dog’s diet.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our online service where you can talk to a vet online and get the personalized advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

What Is DCM?

Canine dilated cardiomyopathy is a disease affecting the heart muscle of dogs. For dogs with DCM, their hearts have a decreased ability to pump blood, which can often lead to congestive heart failure.

While certain breeds of dogs are predisposed to DCM—such as Cocker Spaniels, Doberman Pinschers, Great Danes, Irish Wolfhounds, Newfoundlands, and Saint Bernards—the FDA started taking notice when reports from the veterinary cardiology community showed atypical cases in breeds like Bulldogs, Golden Retrievers, Labrador Retrievers, Shih Tzus, and Whippets, who consistently ate grain alternatives.

If you are concerned about the health and well-being of your pet, we recommend getting in touch with a vet for guidance.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our online service where you can talk to a vet online and get the personalized advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

How Did We Find Out That Grain-Free Diets Could Be Dangerous?

A total of 524 reports of DCM (515 dogs and 9 cats) were reported and received by the FDA between January 2014 and April 2019, of which the total number of pets is actually greater due to the fact that many of these reports came from multi-pet households.

In July 2019, the FDA released an update on diet and canine heart disease, in which they investgated product labels of the dog foods reported in these DCM cases. More than 90% of these foods were found to be grain-free, while 93% contained peas and lentils, and 42% contained potatoes and sweet potatoes.

Dr. Klein shared that, although at the time, there was no proof that the ingredients were the cause of DCM, dog owners should definitely be aware of the FDA alert.

dog and cat eating pet food together at home
Image Credit By: New Africa, Shutterstock

divider dog paws 3 oct 2024

Conclusion

Going against the grain of popular opinion (excuse the pun), grains are not necessarily a harmful addition to dog’s diets and are even encouraged as a source of carbohydrates and fiber.

Conversely, feeding dogs a grain-free diet that is loaded with legumes instead of grains can actually be harmful. The FDA is continuing to work with both veterinary cardiologists and nutritionists to gain a better understanding of the connection between grain-free diets and the risk of DCM.

See Also: 


Featured Image Credit: Caftor, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

The Spice Cabinet Dangers Most Dog Owners Don’t Think About

Most people know chocolate is off-limits for dogs. Fewer realize that some of the most common herbs and spices sitting in a kitchen...

A Major Breakthrough in Canine Anxiety Care: FDA Approves First Dual-Purpose Medication

Why This FDA Approval Is Such Important News For years, veterinarians and pet parents have struggled with a frustrating reality in canine behavioral...

Ask Dr. Paola- Help! Can Shock Collars Cause Seizures? (June 1, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Behind Most “Bad” Dog Behavior Is a Pretty Simple Problem (and Solution)

Dogs are supposed to be easygoing companions, and many seem to live up to it: sleeping on the couch for hours, watching the...

More related

Can Dogs Eat Gummy Worms? Vet-Verified Nutrition Facts & Alternatives

We take our dogs with us wherever we go, spoil them on holidays, and consider them part of our family. So, it makes...

6 Fun Nose Work Games for Your Dog’s Scent Stimulation (Vet-Approved)

Everyone knows that dogs need physical exercise. However, our canines also need plenty of mental stimulation. Most breeds were bred for a specific...

6 Rhodesian Ridgeback Health Issues to Watch For (Vet Answer)

The Rhodesian Ridgeback is a handsome breed that was developed in Africa to be a hunter and guardian. These dogs are smart but...

13 Popular Dachshund Mixes (With Pictures)

The Dachshund is a popular breed with short legs and a long body. They have a long lifespan and love to play with...

Keep reading

Can Dogs Eat Brownies? Vet-Approved Facts, Risks & FAQ

Brownies have long been an American favorite for those who love sweets. They are gooey, sweet, and filled with chocolaty heaven. For dog owners, we’re sure there has been a time when your dog stared at you longingly because they...

Can Dogs Eat Brownies

11 Best Foods for Pit Bull Puppies in 2026 – Reviews & Top Picks

If you’ve just brought home your adorable Pit Bull puppy, you may be wondering if you should get breed-specific food. Though all dog food must adhere to standards set forth by the Association of American Feed Control Officials (AAFCO), some...

pitbull boxer mix puppy sitting and looking up at camera

Can Dogs Eat Sunflower Butter? Vet-Reviewed Facts & FAQ

This rich, delicious seed butter is often used by humans as an alternative to peanut butter or a topping that shines on its own. But can dogs eat sunflower butter too? Yes! Sunflower butter is a healthy treat for dogs...

Can Dogs Eat_Sunflower Butter

Can Dogs Eat Alfredo Sauce? Vet Reviewed Nutrition Facts

Alfredo sauce is an Italian sauce made with cheese, butter, cream, and salt, but typically also includes garlic and onion. Dogs do not need to be given extra salt in their diets, and even if your dog can tolerate dairy...

Can Dogs Eat Alfredo Sauce

Authority Dog Food Review 2026: Pros, Cons, Recalls & FAQ

Review Summary If you have a dog, you’re probably constantly searching for foods that will provide your pup with the nutrients that they need for proper development. Since there are various brands on the market, deciding on a particular one...

Dogster_Authority Dog Food Review

11 Best Holistic Dog Foods in 2026 – Reviews & Top Picks

Our pets are part of the family, so it makes sense that we want to feed them the very best. In the past, commercial dog food options were limited and contained a lot of fillers, preservatives, and unhealthy ingredients. Now,...

beagle dog eating from bowl

7 Best Dog Foods for German Shepherds in 2026 – Reviews & Top Picks

If you have a German Shepherd, you know that these are very active dogs that require high-quality, protein-rich food in order to have their nutritional needs met. Because of the sheer number of options available on the market, selecting a...

german shepherd eating dog food outdoors

Can Dogs Eat Starburst? Vet-Reviewed Facts & FAQ

Technically speaking, Starburst candies are not toxic to dogs, but dogs should not consume them because they are full of sugar, have no nutritional value, and can cause digestive issues. Dogs do not need sugar in their diet because it...

Can Dogs Eat Starburst

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Dogster Email Newsletter