⚡ Quick answer: No — but plain cooked potato is fine. Raw potato contains solanine, a glycoalkaloid concentrated in the skin, in any green areas and in sprouts. Cooking destroys most of it. The specific things to avoid are raw, green and sprouting potatoes.
🚨 If your dog has eaten raw, green or sprouting potato
Call a vet, particularly if the potato was visibly green or sprouting, or if a large amount was eaten. Plain cooked potato needs no action at all — it is specifically the raw and green forms that carry solanine.
- US — ASPCA Animal Poison Control Center (888) 426-4435
- US — Pet Poison Helpline (855) 764-7661
- UK — Animal PoisonLine 01202 509000
- AU — Animal Poisons Centre 1300 869 738
Have your dog’s weight, what was eaten, roughly how much and when ready before you call. Keep any packaging.
The short answer
No, raw potato should not be fed to dogs. But this is one where the blanket answer obscures something useful: cooked potato is perfectly safe, and appears in plenty of commercial dog foods.
The difference is solanine, a natural glycoalkaloid the potato plant produces as a defence against pests. It concentrates in the skin, in any green-tinged areas and in sprouts, and it is largely broken down by cooking.
So the practical rule is straightforward. Cooked, plain, peeled potato is fine in moderation. Raw potato, green potato, sprouting potato and the leaves of the plant are not.
Table of Contents
Why raw potato is dangerous for dogs
The compound responsible: Solanine and chaconine, glycoalkaloids produced by the potato plant.
Glycoalkaloids inhibit acetylcholinesterase, an enzyme essential for normal nerve signalling. They also disrupt cell membranes in the gut, which is what produces the vomiting and diarrhoea that usually come first.
Concentration varies enormously across the potato. A normal white potato flesh contains very little. The skin contains considerably more, and green areas and sprouts can contain ten times as much or more — greening occurs when potatoes are exposed to light, and the green colour is chlorophyll, which is harmless in itself but reliably indicates raised solanine.
Cooking destroys most glycoalkaloid content, though not all — which is why green potatoes should be discarded rather than cooked, for people as well as dogs.
Raw potato also contains resistant starch that dogs digest poorly, so a raw potato causes digestive upset even setting the solanine aside.
How much raw potato is dangerous?
Signs in dogs are associated with roughly 1 mg of solanine per kilogram of body weight, though the data in dogs is less precise than for many toxins.
The difficulty is that solanine content varies by more than a hundredfold depending on the potato, so a weight-based table of potato quantity would be misleading. What follows is a guide by type instead.
| Form | Approximate solanine | Concern |
|---|---|---|
| Cooked, peeled white potato | Very low | Safe in moderation — plain, no butter or salt |
| Raw white potato, no green | Low but present | Digestive upset likely; avoid |
| Potato skin, raw | Moderate to high | Avoid |
| Green-tinged potato | High | Toxic — call a vet |
| Sprouts and sprouting potato | Very high | Toxic — call a vet |
| Potato plant leaves and stems | Very high | Toxic — call a vet |
Green means discard, not cook. Cooking reduces glycoalkaloids but does not eliminate them, and a visibly green potato should not be eaten by anyone.
Potato plants in a vegetable garden are a genuine hazard — the leaves and stems contain far more solanine than the tuber.
Raw potato is also simply hard to digest. Even a solanine-free raw potato would cause an upset stomach.
Symptoms to watch for
Usually two to twelve hours after eating.
Early signs
- Vomiting
- Diarrhoea
- Drooling
- Abdominal pain
- Reduced appetite
Signs of serious poisoning
- Lethargy and weakness
- Confusion
- Slow heart rate
- Tremors
- Dilated pupils
- Difficulty breathing
- Paralysis in severe cases
Serious neurological signs require a substantial ingestion of green or sprouting potato. Most cases involving ordinary raw potato produce digestive upset only.
What to do if your dog has eaten raw potato
- Establish what was eaten — cooked, raw, green, sprouting, or plant material.
- Plain cooked potato needs no action.
- For raw potato, monitor for digestive upset and contact a vet if vomiting persists.
- For green or sprouting potato, call a vet — this is the form that carries a real toxic dose.
- For potato plant material, call a vet promptly.
What not to do
- Do not feed raw potato as a treat or chew.
- Do not cook green potatoes and feed them — cooking does not remove enough.
- Do not feed potato that has been fried, buttered or salted, even if cooked.
- Do not let dogs dig in a vegetable patch where potatoes grow.
How vets treat it
For recent significant ingestions of green or sprouting potato, a vet may induce vomiting and give activated charcoal.
Treatment is otherwise supportive: intravenous fluids for dehydration, anti-nausea medication, and monitoring of heart rate and neurological status.
Atropine is occasionally used where anticholinesterase effects are pronounced.
Most dogs recover well. Serious cases are uncommon and generally involve a substantial quantity of green or sprouted potato.
Dogs at higher risk
The main determinant is what form of potato was eaten, but some dogs are more vulnerable.
- Small dogs and puppies
- Dogs with existing heart conditions — the cardiac effects matter more
- Diabetic dogs — potato is high in starch even when safely cooked
- Dogs with sensitive stomachs
- Dogs with access to a vegetable garden
Where dogs usually get hold of raw potato
Most cases involve a dog helping itself rather than being fed.
- Potatoes stored in a low cupboard or vegetable rack
- Sprouting potatoes at the back of a cupboard — the highest-risk form in most homes
- Peelings in a bin or compost heap
- Potato plants in a vegetable garden
- Raw chips prepared for cooking
- Green potatoes discarded but still accessible
What to give instead
Cooked potato is fine, and there are better starchy options too. Keep any of these within the 10% treat allowance.
- Plain cooked potato — boiled or baked, peeled, no butter, no salt
- Cooked sweet potato — higher in fibre and beta-carotene; never raw
- Plain cooked pumpkin or butternut squash
- Plain boiled rice — the standard base for a bland diet
- Carrot sticks if you want something raw and crunchy
Frequently asked questions
Can dogs eat cooked potato?
Yes. Plain cooked potato — boiled or baked, peeled, with no butter, salt or seasoning — is safe in moderation. Cooking destroys most of the solanine that makes raw potato a problem.
What happens if a dog eats a raw potato?
An ordinary raw white potato usually causes digestive upset — vomiting, diarrhoea and abdominal discomfort — from the solanine and the poorly digestible raw starch. A green or sprouting potato is a more serious concern and warrants a call to a vet.
How do I know if a potato is dangerous?
Look for green colouring and sprouts. Green indicates light exposure and reliably signals raised glycoalkaloid content; sprouts are higher still. Both should be discarded rather than cooked.
Are potato skins safe for dogs?
Raw skins contain considerably more solanine than the flesh and should be avoided. Cooked skins are lower risk but are often prepared with oil and salt, so they are still not a good choice.
Is potato in commercial dog food safe?
Yes. Potato in commercial dog food is cooked during processing, which destroys the glycoalkaloids. It is a common and acceptable carbohydrate source.
What about sweet potato — is raw sweet potato safe?
Sweet potato is a different plant and does not contain solanine, but raw sweet potato is still hard to digest and is a choking risk. Cook it.
The bottom line
Raw potato is not suitable for dogs, but the useful version of that advice is more specific: it is the solanine in the skin, the green areas and the sprouts that matters, and cooking removes most of it.
Plain cooked potato is a perfectly reasonable food for a dog. A green or sprouting potato is worth a phone call. That distinction is more useful than a blanket prohibition, because it tells you which situation you are actually in.
References
- Friedman M. Potato glycoalkaloids and metabolites: roles in the plant and in the diet. Journal of Agricultural and Food Chemistry 2006;54(23):8655–8681.
- Barceloux DG. Potatoes, tomatoes, and solanine toxicity. Disease-a-Month 2009;55(6):391–402.
- Merck Veterinary Manual. Toxicology of food-associated hazards.
- ASPCA Animal Poison Control Center. Toxicology case data and species-specific guidance.
This article is informational and does not replace veterinary advice. If you are worried about your dog, contact your own vet or one of the poison lines listed above — that call is always the right call.
