No, dogs should not eat raw potatoes. Raw potatoes contain solanine, a toxic alkaloid that damages the digestive tract and nervous system, causing vomiting, diarrhoea, and neurological symptoms.
Why Are Raw Potatoes Dangerous for Dogs?
Raw potatoes pose a specific toxicity risk:
Solanine — Raw potatoes contain solanine, an alkaloid toxin that is produced naturally by the potato plant as a defence mechanism. Solanine damages:
- The gastrointestinal tract lining, causing inflammation and distress
- The nervous system, causing tremors and other neurological effects
- Red blood cells and overall cellular function
Concentration in skins and sprouts — Solanine is most concentrated in the potato skin and in sprouted areas. Even a small piece of raw potato skin contains significant solanine.
Heat sensitivity — Cooking (boiling or baking) largely destroys solanine, which is why cooked potatoes are generally safe, but raw potatoes are not.
Green or sprouted potatoes — Potatoes that have turned green or developed sprouts contain much higher solanine levels and are extremely dangerous.
How Much Raw Potato Is Toxic?
Solanine toxicity depends on the amount and concentration:
- Toxic dose — Approximately 0.2–0.3 grams of solanine per kilogramme of body weight
- Raw potato solanine content — Roughly 0.2–0.5 grams of solanine per 100 grams of raw potato (varies by variety and freshness)
- Small dogs (under 5 kg) — Even a quarter of a raw potato may reach toxic levels
- Medium dogs (20 kg) — About half a raw potato or more may cause toxicity
- Green or sprouted potatoes — Can have 2–3 times higher solanine, making them dangerous in much smaller quantities
If your dog has eaten raw potato, contact your vet or call the Animal PoisonLine on 01202 509000. Provide details on the size and type of potato.
Many pet owners assume potatoes are safe because cooked potatoes are used in some dog foods. However, raw potatoes are completely different and must be avoided.
Symptoms to Watch For
Symptoms typically appear within 4–6 hours, though some may develop sooner:
- Vomiting (often within 1–4 hours)
- Diarrhoea (ranging from soft stool to severe, watery)
- Abdominal pain or cramping
- Loss of appetite
- Excessive drooling
- Tremors or muscle twitching
- Weakness or lethargy
- Rapid heart rate
- Increased temperature
- Behavioural changes (confusion, agitation)
- Pale or blue-tinged gums (in severe cases, indicating poor oxygenation)
Monitor most carefully between hours 4–12 after exposure.
What to Do If Your Dog Eats Raw Potato
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Identify what was eaten. Determine whether it was a regular potato, a green potato, or one with sprouts, as this affects severity.
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Call your vet or the Animal PoisonLine on 01202 509000 immediately, especially if your dog is small or ate a large amount.
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Do not induce vomiting unless instructed by your vet.
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Monitor for symptoms over the next 12 hours, particularly vomiting and diarrhoea.
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Offer small amounts of water if your dog isn't vomiting, to help rinse the digestive tract.
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Avoid food for a few hours. Once vomiting stops, offer bland food like boiled chicken and rice.
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Visit the vet if symptoms develop, especially if vomiting persists, diarrhoea is severe, or neurological symptoms appear.
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Get blood work done if your vet recommends it to check for organ damage or electrolyte imbalances.
Prevention Tips
- Keep all raw potatoes stored securely. Store in a cool, dark place where your dog cannot access them.
- Never leave potatoes unattended during food preparation or cooking.
- Discard potato peelings in sealed bins. Do not leave peels in the kitchen where your dog can find them.
- Avoid composting raw potatoes. If you have an outdoor compost, ensure your dog cannot dig into it.
- Be careful with green potatoes. Never use potatoes with green tinging or visible sprouts in cooking, and dispose of these safely away from your dog.
- Only feed cooked potatoes to your dog, and only as an occasional treat in plain form (no salt, butter, or seasoning).
- Check commercial dog foods. Most reputable brands use processed potato starch (safe) rather than whole raw potatoes.
- Educate family and guests that raw potatoes are toxic.
- Warn your dog sitter or walker about this risk.
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