Can cats eat potatoes?
Safe in moderationA small bite of plain cooked potato is safe for cats, but raw or green potato is toxic and should be avoided.
Reviewed by the Webvet Veterinarian Team · Last reviewed June 26, 2026
Can Cats Eat Potatoes?
A small bite of plain, cooked, peeled potato is safe for a cat, but raw or green potato is toxic and should never be offered. Potato is a starchy carbohydrate, and cats are obligate carnivores that get little to no benefit from it, so it belongs in the occasional-nibble category rather than anywhere near your cat's daily diet. If your cat licks a spoonful of plain mash off your plate, there is no need to panic, but there is also no nutritional reason to make it a habit. The real risks come from how potato is usually served to people: fried, buttered, salted, or raw. Get those wrong and a harmless starch becomes something you genuinely want to keep away from your cat.
- 1Plain, fully cooked, peeled potato is non-toxic to cats in tiny amounts.
- 2Raw potato, green skin, and any part of the potato plant contain solanine, which is toxic.
- 3Cats are obligate carnivores and do not need potato or any starch to be healthy.
- 4Skip fries, chips, mashed potato with butter or milk, and anything salted or seasoned.
- 5A lick or a pea-sized piece is plenty; meat-based treats are always the better choice.
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Are Potatoes Safe for Cats?
Cooked plain potato is not poisonous to cats. Once a potato has been boiled or baked all the way through, the starch is softened and the toxic compound that makes raw potato dangerous is no longer a meaningful concern. In that plain, cooked, unseasoned form, a small taste will not harm a healthy cat. Most vets and pet nutrition sources agree on this point: properly prepared potato is safe, just not useful. That last word matters. Safe and beneficial are two very different things, and for a cat, potato only ever reaches the first one.
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The trouble is that potato is almost never served plain in a home. It shows up as fries, crisps, hash browns, or mashed potato loaded with butter, cream, milk, and salt. Every one of those additions is a problem for a cat long before the potato itself is. So while the honest answer to whether cats can eat potato is a cautious yes, the practical answer for most kitchens is that the version on your plate is usually the wrong version to share. If you want to offer potato at all, you have to prepare a portion specifically for your cat, plain and cooked, with nothing added.
Why Your Cat Doesn't Need Potatoes
Cats are obligate carnivores, which means their bodies are built to run on meat. They draw their protein, essential amino acids such as taurine, and most of their energy from animal tissue, and their digestive system is short and geared toward breaking down meat rather than plants. A cat does not need carbohydrates the way a person or even a dog does, and it cannot make good use of the starch in a potato. Cats also cannot taste sweetness at all, so the mild appeal a potato has for us is largely lost on them. When a cat seems interested in potato, it is usually curious about the smell, the warmth, or the fat and salt of a seasoned version, not the vegetable itself.
Because potato brings nothing a cat requires, every bite of it displaces something better. A tablespoon of mashed potato is calories without the animal protein a cat is designed to use, and in a small 8 to 10 pound body those empty calories add up quickly. Regularly feeding starch can nudge a cat toward unwanted weight gain, and extra pounds raise the risk of diabetes and joint strain. For a cat, the smartest way to think about potato is as a rare novelty at most, not a food group. It is a taste, not nutrition.
Raw vs Cooked: The Solanine Danger
The single most important rule with potato and cats is simple: cooked yes, raw never. Raw potatoes contain solanine, a glycoalkaloid that the plant produces as a defense. It is concentrated in the skin, in any part that has turned green from light exposure, and in the little sprouting eyes. Cooking a peeled potato thoroughly reduces solanine to a level that is safe for the small taste a cat might have, which is exactly why plain boiled or baked potato is considered acceptable while raw potato is not.
A cat is far smaller than a person, so it takes far less solanine to cause a problem. Signs of solanine poisoning can include heavy drooling, an upset stomach with vomiting or diarrhea, lethargy, and in serious cases tremors or a slowed heart rate. The good news is that most cats have no interest in gnawing a raw potato, and the ones that do rarely eat much. Still, this is why you should keep raw potatoes, peelings, and any green or sprouting spuds well out of reach, and never leave them where a curious cat can bat one off the counter.
How to Safely Offer Potato to a Cat
If you do want to share a little potato, prepare it the boring way. Peel it, cook it fully by boiling or baking with nothing added, let it cool, and offer only a tiny plain piece about the size of a pea, or a small lick of plain mash made with water rather than milk or butter. Serve it on its own so you can watch how your cat reacts, and treat it as an occasional novelty rather than a regular addition. Because potato is starchy, keep the portion genuinely small, especially for an overweight, senior, or diabetic cat, and check with your vet first if your cat has any health conditions.
| Potato form | Cat-safe? | Why |
|---|---|---|
| Plain boiled or baked, peeled | Yes, tiny amount | Non-toxic once cooked; still just a taste, not a need |
| Raw or green potato | No | Contains solanine, which is toxic to cats |
| Potato skin, sprouts, peelings | No | Solanine is concentrated here |
| French fries or chips | No | Too fatty and salty; often fried in oil |
| Mashed potato with butter or milk | No | Added fat, salt, and dairy that cats digest poorly |
Potato Forms to Avoid
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The everyday ways we eat potato are the ways you should not share it. French fries and potato chips are cooked in oil and coated in salt, and cats are very sensitive to salt because their small bodies reach a harmful dose from a surprisingly tiny amount. Mashed potato is usually made with butter, cream, or milk, and many adult cats are lactose intolerant, so dairy tends to cause stomach upset and diarrhea. Worst of all are potato dishes cooked with onion or garlic, which are far more dangerous to cats than most people realize; even small amounts of allium can damage a cat's red blood cells and cause anemia. Roasted potatoes seasoned with garlic butter, hash browns, and creamy potato bakes all fall firmly in the do-not-share column.
Better Treats: Cat-Safe Alternatives
Because a cat thrives on meat, the best treats are made of protein, not starch. If you want to give your cat something special, offer a small piece of plain cooked chicken, a little plain cooked egg, or a few flakes of plain cooked fish such as cod. These deliver the animal protein a carnivore actually uses, and most cats find them far more exciting than any vegetable. A lick of plain meat-only baby food or a proper cat treat works too. If you specifically want a vegetable-style option, a tiny amount of plain cooked sweet potato is more nutrient-dense than white potato, though it is still a treat and not a staple. Whatever you choose, keep treats to no more than about a tenth of your cat's daily calories so they never crowd out a complete, balanced cat food.
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The Bottom Line
Cats can eat a small amount of plain, cooked, peeled potato without harm, but it is a starch they do not need and never a substitute for meat. Raw and green potato is toxic thanks to solanine, and the fried, buttery, or salted versions we enjoy are unsafe for a cat's small, salt-sensitive, often lactose-intolerant body. If your cat sneaks a lick of plain mash, don't worry, but there is no reason to offer potato on purpose. Keep raw potatoes and peelings out of reach, save the treats for something meaty, and let a complete, balanced cat food do the real work of keeping your cat healthy.
Frequently Asked Questions
Can cats eat raw potatoes?
No. Raw potato contains solanine, a toxin that is concentrated in the skin, green areas, and sprouts. It can cause drooling, vomiting, diarrhea, and weakness in cats. Only fully cooked, plain, peeled potato is safe, and even then only as a tiny occasional taste.
Can cats eat mashed potatoes?
Only if it is plain. Mashed potato made with butter, cream, or milk is not a good idea, because many adult cats are lactose intolerant and the added fat and salt can upset their stomach. A tiny lick of mash made with only water is the most a cat should ever have.
Can cats eat french fries or potato chips?
No. Fries and chips are cooked in oil and heavily salted, and cats are very sensitive to both fat and salt. A single fry will not usually cause an emergency, but these salty, greasy foods have no place in a cat's diet and should not be offered.
Can cats eat potato skin?
No. The skin, especially if it is green, holds the highest concentration of solanine, so it is the riskiest part of the potato. Always peel a potato before cooking any small piece you plan to share with your cat, and throw peelings away where your cat cannot reach them.
Can cats eat potatoes every day?
No. Cats are obligate carnivores and gain nothing nutritionally from potato, so daily starch just adds empty calories that can lead to weight gain. Treat plain cooked potato as a rare novelty at most, and rely on a complete cat food plus meat-based treats instead.
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.