Quantity
Even a small piece of raw green potato can cause gastrointestinal upset in a cat. A larger amount (several bites) of very green potato could cause neurological symptoms. The toxic dose depends heavily on the solanine concentration, which varies widely.
Notes
The green color on potatoes indicates high solanine concentration — the greener the potato, the more toxic it is. Potato eyes (the sprouting parts) are also concentrated sources. Potato plants, leaves, and stems contain even higher solanine levels than the tuber itself. Cats who dig in gardens with potato plants are at risk. Sweet potatoes are from a completely different plant family and do not contain solanine.
Negative Signs
* Drooling and oral irritation
* Vomiting and diarrhea (sometimes bloody)
* Abdominal pain and bloating
* Lethargy and weakness
* Confusion or disorientation
* Tremors in severe cases
* Slow heart rate
FAQ
Q: My cat chewed on a raw potato I dropped while cooking. Is that dangerous?
A: A small nibble of a normal (not green) potato is low risk, but monitor for vomiting or diarrhea. If the potato was green or your cat ate a significant amount, call your vet. Always keep raw potatoes off accessible counters.
Q: Can cats eat cooked potato?
A: Plain cooked potato (peeled, no butter or seasoning) in very small amounts is generally safe. It has minimal nutritional value for cats, though, so there's no real reason to make it a regular treat. Cats are obligate carnivores — meat is always a better choice.
Alternatives
If your cat enjoys starchy vegetables, a tiny bit of cooked, peeled sweet potato (which is not a nightshade and contains no solanine) is a much safer option. Plain cooked pumpkin is another safe choice.
Risks & Disclaimer
If your cat ate raw potato — especially the skin, eyes, or green parts — call your vet. The solanine concentration varies by how green the potato is, but any raw potato exposure in a cat is worth a call. Cooked, peeled, plain potato in small amounts is not a concern.
