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My 4 kg Chihuahua ate a spoonful of cooked potato. Is it more dangerous than a raw tomato?

Dogs · Food safety

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

No, plain cooked potato is less risky for a small dog than raw tomato. The green parts, skin, and sprouts of raw potatoes are toxic, but cooked, peeled potato without green parts is generally safe in tiny amounts. Raw tomato plants and unripe green tomatoes also contain toxins. Just watch your dog for any vomiting or diarrhea, and contact your vet if those signs appear.

Cooked potato — Food safety facts

Feed with care · Dogs · full breakdown on the linked food page

Plain cooked potato (no skin, no green parts) is fine. Raw potatoes, green skin, eyes and sprouts contain solanine, which is toxic.

Dogs and cats carry the same rating (Feed with care), so the notes below hold for either pet.

Cooked potato is not poisonous to dogs, but it is easy to over-feed. Rich fat, salt or seasoning can bring on vomiting or diarrhoea within a day, and repeated large portions are a recognised trigger for pancreatitis.

If it ate some before you noticed, watch for vomiting, diarrhoea, loss of appetite, unusual tiredness or a painful, swollen abdomen over the next 24 hours. A one-off small amount in a healthy adult usually passes with water and rest; repeated exposure, a puppy or kitten, a senior, or a pet with an ongoing illness is a reason to call your vet the same day.

Why these cautions matter

Raw animal protein carries Salmonella and E. coli risk, and those bacteria can spread to the people in the household too.

The full verdict, portion guidance and serving notes are collected on the Cooked potato food facts page.

Open the full food page: Cooked potato food facts →