Potatoes are in the same nightshade (Solanaceae) family as tomatoes, and green-tinged skin or sprouts on a potato indicate elevated levels of solanine, the same alkaloid responsible for green-tomato toxicity. Cooking reduces but does not necessarily eliminate solanine, and raw potato — especially green or sprouted potato — carries the greatest risk. Effects can include gastrointestinal upset, hypersalivation, and lethargy.
No safe amount is established. Avoid green-skinned, sprouted or raw potato.
Plain cooked white potato is not toxic in a small amount, but it is a starchy food that cats do not need. Never offer raw or green potatoes, sprouts, or peels.
Contact a veterinarian or pet poison hotline for advice, particularly if the cat ate peel, sprouts, or a large amount. Report vomiting, drooling, lethargy, or tremors.
General public resources referenced while researching this tool's topic.
General educational guidance based on the references above, not veterinary advice. See our editorial policy for how we choose sources.
This tool is intended for educational purposes only and should not be used as a substitute for emergency veterinary advice, diagnosis, or treatment.
If your pet may have consumed toxic foods, chocolate, medications, chemicals, or other dangerous substances, seek immediate help from a licensed veterinarian or emergency animal service in your area. Do not delay professional care based on calculator or search results alone.
Pet poison hotlines (24/7, US and Canada):
ASPCA Animal Poison Control Center: (888) 426-4435
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Pet Poison Helpline: (855) 764-7661
Pet Poison Helpline states its service covers the U.S., Canada and the Caribbean. The ASPCA line is also used by Canadian pet owners. A consultation fee may apply to both. In Canada, your nearest 24-hour emergency vet clinic is the best first call; elsewhere, use local emergency veterinary directories.
How we calculate results: This tool uses commonly referenced veterinary toxicity thresholds and food safety guidelines. Actual toxicity can vary based on your pet's size, health status, and exact substance consumed. These results are estimates only and do not replace a veterinary assessment.