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My 7 kg dog ate two moldy raisins from old raisin bread left out overnight — is the mold an extra danger?

Dogs · Food safety

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

Short answer

Yes, the mold adds another layer of risk, but the raisins themselves are the immediate emergency. Even two raisins can cause acute kidney failure in a dog that size. Mold can produce mycotoxins that cause tremors or seizures, on top of the grape toxin. Do not wait for symptoms like vomiting or reduced urination to appear. Call your vet or a poison helpline right now. Tell them about the mold and how long the bread was out. They will likely advise bringing him in for monitoring and possibly inducing vomiting if it was very recent.

Raisins — Food safety facts

Do not feed · Dogs · full breakdown on the linked food page

Toxic, like grapes — a small amount can cause acute kidney failure. Even one raisin for a small dog deserves a vet call.

Dogs and cats carry the same rating (Do not feed), so the notes below hold for either pet.

Raisins should not be given to dogs at all. Even a small amount can do harm, so there is no portion small enough to be safe.

Do not induce vomiting and do not give milk or oil to “dilute” it. Note the food and roughly how much was eaten, then call your vet or a pet poison hotline and follow their advice on whether to bring the pet in straight away.

Why these cautions matter

Grapes and raisins are linked to kidney failure in dogs, and no safe amount is reliable — some pets react after only a few.

Raisins has no place in everyday feeding: keep the rest of the day's food unchanged after this and watch the next walk and the stool that comes with it.

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

Open the full food page: Raisins food facts →