Potatoes are a staple food for people, but it is worth asking: can cats eat potatoes? Plain, cooked potato flesh is not toxic to cats in small amounts, but raw potato and green parts of the potato plant are a different matter entirely.
Raw potatoes contain solanine, a compound that is toxic to cats. Only fully cooked, plain potato flesh should ever be offered, and even then only as a tiny, occasional treat with no real nutritional benefit for obligate carnivores.
Quick Answer
Cats can eat a tiny amount of plain, fully cooked potato flesh, but raw potato, green potato skin, and potato with solanine are toxic. Plain boiled or baked potato with no salt, butter, sour cream, onion, or garlic is the only safe option. Avoid chips, fries, and mashed potato with additives entirely.
Is Potato Safe for Cats?
The safety of potato depends entirely on preparation. Fully cooked plain potato flesh is not toxic, and you will even find potato listed as a carbohydrate source in some grain-free commercial cat foods, where it is processed and balanced into the recipe. However, raw potato is a different story. Raw potato contains solanine, a natural toxic compound found in plants of the nightshade family. Green potato skin, the "eyes," potato sprouts, and potato leaves and stems contain especially high levels of solanine and must never be given to cats.
Cooking breaks down most of the solanine in the potato flesh, which is why fully cooked plain potato is considered safe while raw potato is not. Solanine poisoning can cause vomiting, diarrhea, drooling, lethargy, weakness, confusion, and in severe cases more dangerous effects on the heart and nervous system. Because cats are small, it takes less to affect them than it would a person, so always ensure the potato is fully cooked and that only the plain flesh, never the green parts or sprouts, is offered.
Even cooked potato is not particularly good for cats. As obligate carnivores, cats have little ability to use carbohydrates for nutrition, and potato is essentially starch. It offers them calories but very little of the protein, taurine, and animal-based nutrients they actually need, which is why it should only ever be a tiny, occasional taste rather than a regular part of the diet.
Potential Benefits
- Cooked potato is digestible: A small amount of plain cooked potato is easy to digest for most cats.
- Potassium and vitamin B6: Present in small amounts in cooked potato flesh.
These minimal benefits do not make potato a worthwhile treat. A complete cat food provides everything cats need without the risks that come with potato preparation errors.
Potential Risks
- Solanine toxicity: Raw potato, green skin, sprouts, and leaves are toxic to cats.
- High in carbohydrates: Potato is starchy and can contribute to weight gain.
- Unsafe seasonings: Salt, butter, sour cream, onion, garlic, and cheese are all harmful.
- Digestive upset: Too much potato can cause vomiting or diarrhea.
If your cat ate raw potato, green potato, or sprouting potato, or shows vomiting, diarrhea, lethargy, or tremors, contact your veterinarian right away.
How Much Can Cats Eat?
A very small amount: a bite or two of plain, fully cooked potato flesh on rare occasions, roughly a teaspoon-sized portion at most. There is no real nutritional reason to include potato in a cat's diet, so unlike protein treats, there is no benefit to offering more, and less is always better.
Treats and table foods like potato should make up no more than 10% of your cat's daily calories. Because potato is starchy and calorie-dense for its size, even a small amount adds up quickly. If your cat shows no interest in potato, there is no reason to encourage it, and a small piece of plain cooked chicken is a far better treat that actually provides the animal protein cats are built to use.
How to Serve It Safely
- Cook the potato fully until soft throughout.
- Use only the plain flesh, with no skin, especially no green skin.
- Serve it plain: no salt, butter, oil, sour cream, onion, garlic, or cheese.
- Cut into a small, bite-sized piece and let it cool.
- Skip chips, fries, mashed potato with additives, and any seasoned potato dish.
When to Avoid It
- Overweight cats or cats on calorie-controlled diets.
- Diabetic cats (potato raises blood sugar).
- Cats on prescription veterinary diets.
- Young kittens that need complete kitten food.
- If you cannot guarantee the potato is fully cooked and plain.
What to Do If Your Cat Eats Raw Potato
Call your veterinarian right away if your cat ate raw potato, green potato, potato sprouts, or potato leaves. Solanine toxicity is a medical concern and you should not wait for symptoms to develop. If symptoms such as vomiting, diarrhea, weakness, or tremors are already present, seek veterinary care immediately.
FAQ
Are raw potatoes toxic to cats?
Yes. Raw potato contains solanine, which is toxic to cats. Only fully cooked plain potato flesh is safe.
Can cats eat potato chips or fries?
No. Chips and fries are high in salt, fat, and often other seasonings that are harmful to cats.
Can cats eat sweet potatoes?
Plain cooked sweet potato in a tiny amount is not toxic, but sweet potatoes are also high in carbohydrates and sugar. Ask your veterinarian before offering either type of potato.
Can kittens eat potatoes?
Kittens should focus on complete kitten food. Avoid potatoes in kittens unless your vet approves.
Can cats eat mashed potatoes?
Only if they are plain. Most mashed potatoes are made with butter, milk, salt, and sometimes garlic or onion, all of which are unsafe for cats. A tiny taste of plain mashed potato with no additives is not toxic, but it is still not a good treat.
Are sweet potatoes safer than regular potatoes for cats?
Plain cooked sweet potato does not contain solanine, so it avoids that particular risk, but it is still high in carbohydrates and sugar. Like regular potato, it should only be a tiny, occasional treat. Ask your veterinarian before offering either.
Conclusion
So, can cats eat potatoes? A tiny amount of plain, fully cooked potato flesh is not toxic, but raw potato, green parts, and sprouting potato are dangerous. Because potato offers little nutritional value for cats, it is best to choose safer treats like plain cooked chicken instead.
Veterinary disclaimer: This article is for informational purposes only and is not a substitute for professional veterinary advice. Always consult your veterinarian before changing your cat's diet.