TL;DR
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Cooked, plain potatoes are safe for dogs in moderation and provide some useful nutrients, including vitamin C, B6, iron, and magnesium.
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Raw potatoes contain solanine, a toxic compound that can cause vomiting, diarrhea, and neurological symptoms. They should never be fed to dogs.
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Fried, seasoned, or processed potato products are off the table entirely.
Whether potatoes are "good" for dogs depends entirely on how they're prepared. The same vegetable can be a reasonable occasional treat in one form and a real health hazard in another.
The safe version: Baked or boiled potatoes, peeled, plain, and completely unseasoned. At that point, they're a fine source of vitamin C, B6, iron, and magnesium, and a digestible source of carbohydrates. The key is keeping them plain.
The unsafe version: Raw potatoes are a firm no. Potatoes belong to the nightshade family and contain solanine, a naturally occurring compound that is toxic to dogs. Cooking significantly reduces solanine levels, but raw and especially green or sprouted potatoes contain enough of it to cause vomiting, diarrhea, lethargy, and, in significant quantities, neurological effects.
What to avoid entirely:
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Fried potatoes (fries, chips, tater tots) — too high in fat and sodium
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Mashed potatoes — typically loaded with butter, salt, and milk
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Seasoned roasted potatoes — garlic and onion are toxic to dogs
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Green or sprouted raw potatoes — highest solanine content
For dogs, potatoes should be a treat, not a staple. They're starchy and calorie-dense without the complete nutritional profile of a quality dog food.
Key Takeaways
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Cooked, plain potatoes are safe in moderation. Baked or boiled with nothing added is the only safe format.
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Raw potatoes are toxic. The solanine content is high enough to cause real harm, especially in green or sprouted forms.
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Fried and seasoned potato products don't belong in a dog's bowl. The fat, sodium, and potentially toxic seasonings make them a hard no.
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