Should you feed your pet grain-free food? (2024)

by Dr. Noelle Weeks, Veterinarian, Veterinary Resource Center

There are a lot of dog and cat foods sold as grain-free with marketing suggesting that feeding no grains is healthier. This is not true and can, in fact, cause illness for some dogs and cats. There is no medical or physiologic basis to feed dogs or cats a grain-free diet.

If a dog or cat has a specific food allergy there may be some medical reason to limit the carbohydrate source which can be done for some animals by feeding a grain-free food. The grain-free fad started as a result of an anti-corn concern. There was a concern that some dogs with food allergies would react to corn in dog food so that was removed as the carbohydrate source. The carbohydrate source was replaced by tubers (potatoes and sweet potatoes) and legumes (peas and lentils); these foods were labeled ‘grain-free’. The anti-corn sentiment has no basis in fact and is actually a myth. Grains found in pet food can be corn, soy, wheat, rice, barley or other grains. While some dogs or cats can develop food allergies to these sources the majority of pets can handle eating grains with no problem. After all, many cats and dogs will eat grass; grass is a grain. The grain-free foods will contain peas, lentils, other legume seeds, or potatoes as the carbohydrate source.

Should you feed your pet grain-free food? (1)

In 2017, veterinarians were seeing a certain type of heart disease, dilated cardiomyopathy, in dog breeds that aren’t prone to that type of heart disease. Dilated cardiomyopathy is a heart disease where the heart dilates. When the heart muscle dilates it becomes a very ineffective pump so that blood doesn’t circulate through the body well. This disease, called DCM, can be fatal by causing heart failure.

There are certain breeds of dog who are genetically susceptible to developing DCM. However, starting in 2017, DCM was being diagnosed in dogs with no known genetic susceptibility AND eating grain-free foods. The veterinary field recognized that some dogs eating grain-free food developed heart disease from dilated cardiomyopathy. There have even been some reports of cats developing DCM while being fed grain-free food. In 2019, the FDA published a report about dogs diagnosed with DCM who ate a grain-free food. Research has shown that some of the DCM in pets was due to taurine deficiency from the grain-free food but other pets developed dilated cardiomyopathy due to other reasons, which may include protein or thiamin deficiency, toxins or heavy metals in the food.

If you are interested in learning more about the link between grain-free food and dilated cardiomyopathy, please visit: https://www.fda.gov/animal-veterinary/outbreaks-and-advisories/fda-investigation-potential-link-between-certain-diets-and-canine-dilated-cardiomyopathy#top

Should you feed your pet grain-free food? (2024)

FAQs

Should you feed your pet grain-free food? ›

To err on the side of caution, you may want to steer clear of grain-free diets for your pets, unless they have been tested positive for grain allergies. At University Animal Clinic, less than one percent of our food allergy pets develop an allergy to grains.

Should I feed my pet grain free? ›

There are a lot of dog and cat foods sold as grain-free with marketing suggesting that feeding no grains is healthier. This is not true and can, in fact, cause illness for some dogs and cats. There is no medical or physiologic basis to feed dogs or cats a grain-free diet.

What do vets say about grain free dog food? ›

In most cases, yes, grain-free food is bad for dogs. There is no medical basis for feeding your dog a grain-free diet. The only exception is if your dog has a specific condition and you are advised to do so by your vet. In short, no studies indicate that grain-free diets are better for dogs than diets with grain.

What grains should dogs avoid? ›

Foods that are classified as grains are; corn, wheat, soy, rice, oatmeal, barley, oats, sorghum, etc. All of these ingredients should be avoided when choosing a kibble. The three top allergens for dogs are corn, wheat, and soy - all of which are in most dog food brands.

What is the 25 rule for pet food? ›

The 25% Rule

The named ingredient(s) must comprise at least 10% of the total product by weight and at least 25% of the product by weight not including the added water. Additional descriptors, such as “dinner,” “entrée,” “platter” and so on, appear in the name.

What are the disadvantages of grain-free dog food? ›

Despite the benefits for some dogs, there are downsides to feeding a grain-free dog food. Many people assume grain free means low carb, but that's not the case. In fact, some dog foods without grains are higher in alternative carbohydrate sources like potatoes and peas. This could result in unintentional weight gain.

What ingredients should I avoid in dog food? ›

Ingredients to avoid:
  • Corn and wheat gluten.
  • Meat and grain meals and by-products.
  • BHA (Butylated Hydroxyanisole)
  • BHT (Butylated Hydroxytoluene)
  • Ethoxyquin.
  • Food Dyes (Blue 2, Red 40, Yellow 5 and 6, 4-MIE)
  • PG (Propylene Glycol)
  • Rendered fat.

What dog food is not recommended by vets? ›

In addition to Blue Buffalo, the brands cited by the FDA are Acana, California Natural, Earthborn Holistic, 4Health, Fromm, Merrick, Nature's Domain, Nature's Variety, Natural Balance, NutriSource, Nutro, Orijen, Rachael Ray Nutrish, Taste of the Wild and Zignature.

How do I know if my dog should be grain-free? ›

Grain-free diets may help some dogs with sensitive digestion. Although most dogs can digest grains without any problems, there are a few pooches that might struggle. If your dog is prone to digestive problems such as constipation, talk to your vet about grain-free dog food and whether this is a good idea for your pet.

Should I eliminate grains from my diet? ›

Whole grains contain fiber and nutrients that can help your health. It's a low-carb world, and many people are pushing grains off their plate in an effort to control their waistline. But they may be doing their body a disservice. Whole grains have some unique properties that make them a valuable addition to the diet.

Is grain-free bad for dogs in 2024? ›

It depends on how you define “grain-free.” A diet that is naturally grain-free, such as a raw diet, is actually great for dogs. However, grain-free kibble tends to be bad for dogs.

Why does my dog poop more on grain-free food? ›

Grain-free dog food is one of the most nutritious diets you could give your dog, but some manufacturers might not consider the protein sources. As such, your dog could be consuming protein that's difficult to digest, resulting in diarrhoea or constipation.

What dog food brands should you not feed your dog? ›

10 Dog Food Brands to Avoid
  • 10 Dog Food Brands to Avoid. Your pup's presence is a gift in and of itself. ...
  • IAMS. ...
  • Purina. ...
  • Alpo. ...
  • Kal Kan. ...
  • Cesar. ...
  • Kibbles 'n Bits. ...
  • Beneful.
Jun 15, 2024

What is the 333 pet rule? ›

The 3-3-3 rule is a guideline for transitioning a rescue dog into its new home and helping it to settle in. It suggests that the first three days should be used for adjusting to its new surroundings, the next three weeks for training and bonding, and the first three months for continued socialization and training.

What is the 10% rule for feeding dogs? ›

The 10% rule means your dog's treats per day allowance should take up no more than 10% of their daily calorie intake. To work this out, it's useful to know the number of calories you should be feeding your dog per day. These can be provided by your pet food's manufacturer or found on the back of all dog food packaging.

What is the 3% rule on dog food? ›

This rule states that any food label that contains “with” in the description must contain no less than 3% of the meat ingredient listed. Common examples include Made with Chicken and Dog Food with Beef. The “Flavor” Rule.

How do I know if my dog should be grain free? ›

Grain-free diets may help some dogs with sensitive digestion. Although most dogs can digest grains without any problems, there are a few pooches that might struggle. If your dog is prone to digestive problems such as constipation, talk to your vet about grain-free dog food and whether this is a good idea for your pet.

What dog foods are not recommended by vets? ›

In addition to Blue Buffalo, the brands cited by the FDA are Acana, California Natural, Earthborn Holistic, 4Health, Fromm, Merrick, Nature's Domain, Nature's Variety, Natural Balance, NutriSource, Nutro, Orijen, Rachael Ray Nutrish, Taste of the Wild and Zignature.

Should I be feeding my cat grain free food? ›

Unless indicated due to documented food allergies or other inflammatory conditions, grain-free diets will not enhance your cat's health. Traditional kibble-based dry and canned foods generally contain balanced nutrients to minimize health issues and promote a long and vibrant life.

Is grain free or ancient grains better for dogs? ›

The characteristics of ancient grains make them the best healthy food for dogs. To stay fuller longer, dogs need a healthy amount of protein and fiber. Ancient grains dog food such as those with quinoa or sorghum are rich in both of these.

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