Can dogs eat potatoes?
Safe in moderationPlain cooked potato is safe for dogs in small amounts, but never feed raw or green potato — it contains solanine.
Reviewed by the Webvet Veterinarian Team · Last reviewed June 26, 2026
Can Dogs Eat Potatoes?
Yes, dogs can eat plain, cooked potatoes in small amounts, but you should never feed raw or green potato because it contains solanine, a natural toxin. A boiled or baked potato with nothing added to it is not poisonous to dogs, and a few plain pieces make a fine occasional treat. The moment potato becomes a problem is when it is served raw, when the skin has turned green or is sprouting, or when it comes loaded with butter, salt, oil, and seasoning the way most people prepare it. Potatoes are also very starchy, so even the safe version is a treat you offer in modest portions rather than a food your dog needs.
- 1Plain, fully cooked (boiled or baked), peeled potato is safe for dogs in small amounts.
- 2Never feed raw or green potato, sprouts, or green skin, they contain solanine, which is toxic.
- 3Skip fries, chips, mashed potato, and any potato cooked with butter, salt, oil, or seasoning.
- 4Potatoes are high in starch, so keep portions modest, especially for overweight or diabetic dogs.
- 5Potato is a treat, not a dietary need; a complete dog food already covers your dog's nutrition.
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Is potato safe for dogs?
Cooked plain potato is safe, but the answer depends entirely on how the potato is prepared. Potatoes belong to the nightshade family, and like tomatoes and eggplant they naturally contain solanine, a compound that is toxic to dogs. Cooking a peeled potato breaks down most of that solanine and leaves a bland, starchy food that a healthy dog can digest without trouble. Raw potato is a different story: it is hard to digest, and its higher solanine content can cause vomiting, diarrhea, and lethargy. Green patches on the skin and any sprouting eyes are concentrated pockets of solanine, which is why potatoes that have gone green or started to sprout should never be given to a dog at all.
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It is worth being clear about how most people actually eat potatoes, because that is where dogs get into trouble. French fries, potato chips, hash browns, and mashed potato are all cooked with generous amounts of fat and salt, and often with onion or garlic powder, both of which are toxic to dogs. A dog that regularly eats these rich, salty foods is far more likely to develop an upset stomach, pancreatitis, or long-term weight problems than one that occasionally gets a plain boiled cube. So when you read that dogs can eat potatoes, the important word is plain.
Why potatoes are a moderation food
Even when it is cooked and plain, potato sits in the moderation category for a simple reason: it is almost pure starch. A single medium potato is packed with carbohydrate and very little of what a dog actually needs from a treat. Dogs are built to get their energy mainly from protein and fat, so a big serving of potato is essentially empty calories that can push a dog toward weight gain. The starch also breaks down quickly into sugar, which causes a spike in blood glucose. For a healthy, active dog an occasional bite is harmless, but for an overweight dog or a dog with diabetes, that blood-sugar spike is a genuine concern and potato is best avoided entirely.
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Potatoes do carry some genuinely useful nutrients. They contain vitamin C, vitamin B6, potassium, and a little fiber, and the flesh is naturally gluten-free. But the amounts a dog would get from a small, safe serving are modest, and a complete commercial dog food already supplies all of these in balanced quantities. In other words, you are not filling a nutritional gap by feeding potato; you are giving a treat your dog happens to enjoy. That framing matters, because it keeps portions where they belong. Treats of any kind, potato included, should make up no more than about ten percent of your dog's daily calories.
How much potato can a dog have?
Because potato is so starchy, the safe amount is smaller than owners often expect. Think of it as a garnish rather than a side dish: a few plain, cooked, bite-sized pieces mixed into a meal or handed over as a treat. Smaller dogs should get proportionally less, and the pieces should always be cut down so they are easy to chew and swallow. The table below gives a rough guide, but the golden rule is to start small, watch how your dog handles it, and never let potato crowd out balanced meals.
| Dog size | Reasonable occasional serving of plain cooked potato |
|---|---|
| Small (under 20 lb) | 1-2 small cubes (about a teaspoon) |
| Medium (20-50 lb) | A few small cubes (about a tablespoon) |
| Large (over 50 lb) | A small handful of cubes, occasionally |
| Overweight or diabetic dogs | Skip potato, too starchy; choose a lower-carb treat |
How to prepare and serve potato safely
Preparation is where you turn a risky food into a safe one. Always cook the potato fully by boiling or baking it, which softens the flesh and breaks down most of the solanine. Peel it first, since the skin holds the highest concentration of solanine and is also harder to digest. Most importantly, serve it completely plain. That means no butter, no oil, no salt, no gravy, and absolutely no onion or garlic, all of which range from unhelpful to outright dangerous for dogs. Let the potato cool to room temperature before offering it so your dog does not burn their mouth.
A few practical habits keep things safe. Store potatoes somewhere cool and dark so they do not turn green or sprout, and throw out any that already have. Never give your dog uncooked potato peelings from the cutting board, and keep bags of raw potatoes out of reach of a determined counter-surfer. If you want to add potato to a homemade meal on a regular basis rather than as an occasional treat, talk to your veterinarian first, because a balanced homemade diet needs to be planned carefully rather than built around whatever starch is in the pantry.
Risks and what to watch for
The biggest risk with potato is solanine poisoning from the raw, green, or sprouted forms. Signs can include vomiting, diarrhea, drooling, loss of appetite, weakness, confusion, and in serious cases a slowed or irregular heartbeat. These usually appear within a few hours of eating and warrant a call to your vet. A second risk is simple dietary overload: too much starchy potato, even the plain cooked kind, can cause gas, loose stool, or a stomachache, and over time it contributes to weight gain. Fried and buttery potato dishes add a third layer of risk in the form of fat and salt, which can trigger pancreatitis in susceptible dogs.
Some dogs are also sensitive to nightshade vegetables specifically, and a handful of dogs simply do not tolerate potato well even when it is prepared correctly. If a small first serving leads to an upset stomach, take that as a sign that potato is not the right treat for your dog and move on to something gentler. Whenever a dog eats a large amount of raw or green potato, or shows any of the poisoning signs above, do not wait it out at home. Call your veterinarian, the Pet Poison Helpline at 855-764-7661, or the ASPCA Animal Poison Control Center at 888-426-4435, and be ready to tell them roughly how much your dog ate and when.
Safe alternatives to potato
If you like the idea of sharing a starchy treat but want something with more to offer, sweet potatoes are the better pick. They are richer in fiber, beta-carotene, and vitamins than regular potato, and dogs tend to love the taste, just serve them cooked and plain, the same way you would a regular potato. For a higher-protein treat that fits a dog's natural diet more closely, plain cooked chicken is hard to beat: lean, well tolerated by most dogs, and free of the starch load that makes potato a moderation food in the first place.
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Frequently asked questions
Frequently Asked Questions
Can dogs eat cooked potatoes?
Yes. Plain potato that has been fully boiled or baked and peeled is safe for dogs in small amounts. The problem is almost never the potato itself but what gets added to it, so keep it free of butter, oil, salt, and seasoning, and keep the portion small because it is very starchy.
Can dogs eat raw potatoes?
No. Raw potato contains higher levels of solanine and is hard to digest, and green or sprouting potatoes are worse still. If your dog swallows a raw or green potato, watch for vomiting, diarrhea, drooling, or weakness and contact your vet or a pet poison hotline.
Which is better for dogs, potato or sweet potato?
Sweet potato is generally the more nutritious choice. It offers more fiber, beta-carotene, and vitamins than regular white potato while being just as easy to prepare. Cook it plain and serve small amounts, and it makes an excellent occasional treat.
Can dogs eat mashed potatoes or fries?
Not the way people make them. Mashed potato, fries, chips, and hash browns are loaded with butter, oil, salt, and sometimes onion or garlic, all of which are bad for dogs. A stolen fry now and then will not usually cause harm, but these should never be a regular treat.
Sources
Reviewed by the Webvet Veterinarian Team
General guidance based on credible veterinary sources — not a diagnosis or a substitute for your veterinarian. If your pet ate something toxic or is unwell, contact your vet or a pet poison line right away.