Can Dogs Eat Raisins? No — raisins are highly toxic

Q: Can dogs eat raisins?

No. Raisins carry the same tartaric acid toxicity as grapes but in more concentrated form. A single raisin has caused kidney failure in small dogs.

The full picture

Raisins, sultanas, and currants are all dried grapes and carry the same severe risk of acute kidney failure in dogs. Because they're dried, the toxic compound — tartaric acid — is more concentrated per gram than in fresh grapes. A single raisin has caused kidney failure in some small dogs, and even a small handful is a serious risk for any size of dog. The unpredictability makes raisins particularly scary: some dogs eat them without incident, while others develop kidney failure from minimal amounts. There is no reliable 'safe dose'. In the UK, raisins are a major cause of Christmas-season vet emergencies because they're hidden in so many seasonal foods.

If your dog has already eaten raisins

{'severity': 'urgent', 'steps': ['Call your vet immediately — even if only one raisin was eaten', 'If your vet is closed, call the Animal PoisonLine on 01202 509000', 'Try to work out how many raisins and what they were in (a mince pie typically contains 15–25 raisins)', 'Do NOT induce vomiting yourself unless your vet tells you to', 'Do not wait for symptoms — treatment in the first 1–2 hours is most effective', 'Save any packaging or remaining food — the vet may want to see it'], 'vet_info_checklist': ['Number of raisins eaten (count or estimate)', 'What the raisins were in (plain, mince pie, cake, cereal bar)', 'Brand/product name if possible', 'Time of ingestion', "Your dog's weight", 'Whether your dog has vomited on their own']}

Risks to watch for

Acute kidney failure
Vomiting (often first sign)
Lethargy and loss of appetite
Increased thirst initially, then reduced urination
Uraemic (fishy) breath in severe cases
Death without treatment in worst cases

Safe portion size

None. Zero. No amount is safe.

Safer alternatives

Blueberries (a much safer sweet-treat swap)
Frozen banana slices
Unsweetened dried apple rings
Small apple chunks (seeds removed)

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Common questions

My dog ate one raisin — is that really an emergency?

It can be. The toxic dose varies dramatically between dogs — there are documented cases of kidney failure from very small amounts. Veterinary advice is consistent: any raisin ingestion warrants a phone call, especially for smaller dogs.

What if my dog ate a mince pie?

This is a vet emergency. A typical mince pie contains 15–25 raisins plus sultanas and currants. The pastry fat and sugar add further concerns. Call your vet immediately — don't wait for symptoms.

Are sultanas and currants the same as raisins for this?

Yes. Sultanas, currants (Zante currants specifically), and raisins are all varieties of dried grape and all carry the same toxicity. 'Black currants' from the Ribes genus are different and not in this toxic family.

My dog ate raisins years ago and was fine — are they OK this time?

Previous tolerance is no guarantee. Tartaric acid levels vary between grape batches, and individual sensitivity is unpredictable. Treat every exposure as a new risk.

What if the raisins were cooked into a cake?

Cooking doesn't neutralise tartaric acid. A slice of cake or a scone with raisins carries the same toxicity risk as eating the raisins alone. Plus baked goods often add butter, sugar, and sometimes chocolate or nuts — more concerns.

Important: This page is general information, not veterinary advice. Every dog is different, and individual factors (age, breed, health conditions, medications) can change what's safe. If in doubt, always contact your vet — or the Animal PoisonLine on 01202 509000 in the UK.