If you’ve been paying attention to pet food news over the past few years, you might have seen some alarming headlines about sweet potatoes and heart disease in dogs. The FDA opened an investigation in 2018 into a possible link between grain-free diets (many of which use sweet potato as a main ingredient) and dilated cardiomyopathy. That sounds scary. But the full picture is a lot more nuanced than the headlines suggest.
The short answer: yes, dogs can eat sweet potato. Cooked, plain, in reasonable amounts, it’s a perfectly good treat. The concern the FDA flagged was about dogs eating commercial food where sweet potato or other starches replaced grains as the primary carbohydrate source, day after day, meal after meal. That’s a very different thing from tossing your dog a few cubes of baked sweet potato after dinner.
Wait, what was the FDA thing about?
Between 2018 and 2019, the FDA received over 500 reports of dogs developing DCM (dilated cardiomyopathy, a serious heart condition) while eating grain-free diets. These diets typically replaced wheat, corn, or rice with potatoes, sweet potatoes, peas, or lentils as the main carb source.
The key word there is main. We’re talking about foods where sweet potato was one of the first three ingredients, fed as the dog’s entire diet for months or years. The investigation didn’t find a definitive cause. The FDA stopped issuing updates in 2022, saying more research was needed. Tufts University’s veterinary nutrition team still recommends caution with grain-free diets but hasn’t singled out sweet potato as a standalone risk.
So where does that leave us? If you’re feeding your dog a balanced, vet-approved diet and occasionally giving them some sweet potato as a treat, there’s no reason to worry.
Cook it first. Seriously.
This is where sweet potato differs from most of the fruits we cover. You can hand your dog a blueberry straight from the punnet. You cannot hand them a raw sweet potato.
Raw sweet potato is tough, starchy, and difficult for dogs to digest. It can cause stomach pain, gas, and in some cases intestinal blockage if they swallow large chunks. The skin is particularly fibrous and hard on their gut.
Cook it however you like. Baked is easiest — peel it, cut into cubes, 200°C for 25 minutes. Boiling takes about 15 minutes after peeling and dicing. Steaming retains the most nutrients, roughly 20 minutes in a steamer basket. You can also mash it with a fork after boiling.
The critical part: no seasoning. No butter. No brown sugar. No marshmallows (yes, people have asked). Plain cooked sweet potato only.
What’s in it that’s actually useful for dogs?
Sweet potato is one of the more nutritionally dense treats you can give a dog. Per 100g of cooked sweet potato, there’s a whopping 11,509 μg of beta-carotene — that converts to vitamin A, which supports eye health, coat condition, and immune function. Sweet potatoes have roughly four times more beta-carotene than carrots.
The fibre content sits at about 3g per 100g, which is good for digestive regularity. It also slows sugar absorption so you don’t get the blood sugar spike you’d see with, say, a banana. There’s 12.8mg of vitamin C per 100g (dogs produce their own, but supplemental amounts can help during illness or stress), and 230mg of potassium for heart function and muscle contraction.
Calorie-wise, you’re looking at 90 per 100g. Not insignificant. More calorie-dense than watermelon (30 cal) or strawberries (32 cal).
The fibre content is actually one of the best reasons to use sweet potato as a treat. Vets sometimes recommend it for dogs with mild constipation or irregular digestion, because the soluble fibre adds bulk without irritating the gut.
How much to give
Sweet potato is starchy and relatively high in calories compared to fruit. A reasonable guideline:
Small dogs (under 10kg): 1-2 tablespoons of cooked cubes, a couple of times a week. Medium dogs (10-25kg): 2-3 tablespoons. Large dogs (25kg+): up to a quarter cup, maybe three times a week.
These aren’t exact prescriptions. Your dog’s overall diet, activity level, and weight all factor in. The general rule vets use is that treats (all treats, not just sweet potato) should make up no more than 10% of a dog’s daily calories.
One thing to watch: sweet potato has a moderate glycemic index. If your dog is diabetic or overweight, talk to your vet before making it a regular treat. The natural sugars can cause problems for dogs who need stable blood glucose.
Sweet potato vs regular potato
People ask this one a lot. They’re actually quite different.
Regular white potatoes belong to the nightshade family and contain solanine when raw or green, which is toxic to dogs. Sweet potatoes aren’t nightshades at all. They’re from the morning glory family, and they don’t produce solanine.
Nutritionally, sweet potatoes have more fibre, more beta-carotene, and fewer simple starches. Both need to be cooked before feeding to your dog, but sweet potato is generally the better option nutritionally. Neither should be a staple of your dog’s diet.
Dehydrated sweet potato chews
You might have seen these sold as dog treats at pet shops. They’re usually just sliced sweet potato, dried until chewy. They’re fine. Some dogs prefer the texture to fresh cooked sweet potato, and they last longer as a chew.
You can make them at home: slice a sweet potato into 5mm strips, bake at 120°C for about 3 hours (flipping halfway), and let them cool completely. Store in an airtight container. They’ll keep for about two weeks.
Skip the store-bought versions that add sugar, salt, or preservatives. Check the ingredients list. It should literally just say “sweet potato.”
When to skip it
Diabetic dogs need vet approval at a minimum — the carb and sugar content can interfere with glucose management. Dogs on a vet-prescribed low-carb diet should avoid it for obvious reasons. If your dog has had pancreatitis, the carb load can still be a problem even though sweet potato itself is low in fat. And if they’re already eating a grain-free commercial diet heavy on potatoes and legumes, piling more sweet potato on top isn’t wise given the DCM question marks.
For most healthy dogs eating a standard balanced diet? Go for it. It’s one of the better treat options out there.
FAQ
Can dogs eat sweet potato skin?
Technically it’s not toxic, but the skin is tough and fibrous. Most dogs will struggle to digest it properly, and it can cause stomach upset. Peel it before cooking. Not worth the risk for zero nutritional benefit.
Can dogs eat raw sweet potato?
No. Raw sweet potato is hard, difficult to digest, and poses a choking or blockage risk. Always cook it first. Baked, boiled, or steamed are all fine.
Can puppies eat sweet potato?
Yes, once they’re eating solid food (usually around 8 weeks). Start with a very small amount — half a teaspoon of mashed cooked sweet potato. Watch for any digestive upset before giving more. Puppies have sensitive stomachs and new foods should always be introduced gradually.
Is sweet potato better than pumpkin for dogs?
They’re both good. Pumpkin has fewer calories and more water content, which makes it better for dogs who need to lose weight. Sweet potato has more beta-carotene and fibre. For digestive issues specifically, vets tend to recommend plain canned pumpkin (not pie filling) over sweet potato. For general treating, either works.
How often can I give my dog sweet potato?
Two to three times a week is a reasonable frequency for most dogs. It shouldn’t be a daily thing unless your vet has specifically recommended it as part of a dietary plan. Remember the 10% treat rule.
