# Can Dogs Eat Grapes?

No — the ASPCA Animal Poison Control Center lists grapes among the people foods to avoid feeding your pet.

## What the ASPCA publishes

Grapes appears on the ASPCA's "People Foods to Avoid Feeding Your Pets" list, which says:

> "Tartaric acid is speculated to be the toxic component in grapes and raisins. Since dogs are not able to process tartaric acid, exposure to grapes/raisins can lead to kidney damage."

## How many grapes is a risk?

The Merck Veterinary Manual publishes a threshold, and it is very low: more than one grape or raisin per 4.5 kg (10 pounds) of body weight may contain enough tartaric acid to pose a risk for renal effects in dogs. Merck also writes that tartaric acid content VARIES between fruits, so staying below that line is not a reassurance.

## Common questions

### Can dogs eat grapes?

No — the ASPCA Animal Poison Control Center lists grapes among the people foods to avoid feeding your pet.

### What does grapes do to a dog?

The ASPCA Animal Poison Control Center publishes this, word for word: “Tartaric acid is speculated to be the toxic component in grapes and raisins. Since dogs are not able to process tartaric acid, exposure to grapes/raisins can lead to kidney damage.” We reprint their sentence rather than paraphrasing it, because a paraphrase is what gets quoted back with the caution removed.

### How many grapes are dangerous for a dog?

The Merck Veterinary Manual publishes a threshold: more than one grape or raisin per 4.5 kg (10 pounds) of body weight may contain enough tartaric acid to pose a risk for renal effects in dogs. Merck also writes that tartaric acid content varies between fruits, so staying below that line is not a reassurance — call your veterinarian with the amount eaten and your dog's weight.

### My dog already ate grapes — what now?

Call your veterinarian, or the ASPCA Poison Control at (888) 426-4435. Note how much was eaten and when. This page reports what published sources say about grapes; it cannot tell you whether your dog is affected, and no amount is described here as safe.

## Other foods on the ASPCA’s avoid list

- Can dogs eat raisins? https://petmeasure.com/dog/food/raisins
- Can dogs eat onions? https://petmeasure.com/dog/food/onions
- Can dogs eat garlic? https://petmeasure.com/dog/food/garlic
- Can dogs eat almonds? https://petmeasure.com/dog/food/almonds
- Can dogs eat macadamia nuts? https://petmeasure.com/dog/food/macadamia-nuts
- Can dogs eat avocado? https://petmeasure.com/dog/food/avocado

## Every dog calculator

- Dog Age Calculator: https://petmeasure.com/dog/age-calculator
- Puppy Weight Calculator: https://petmeasure.com/dog/puppy-weight-calculator
- Dog Pregnancy Calculator: https://petmeasure.com/dog/pregnancy-calculator
- Dog Calorie Calculator: https://petmeasure.com/dog/calorie-calculator
- Dog Chocolate Toxicity Calculator: https://petmeasure.com/dog/chocolate-calculator
- Puppy Feeding Calculator: https://petmeasure.com/dog/puppy-feeding-calculator
- Dog Benadryl Dosage Calculator: https://petmeasure.com/dog/benadryl-calculator
- Puppy Vaccination Schedule: https://petmeasure.com/dog/puppy-vaccination-schedule

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Full method: https://petmeasure.com/sources

_Verified 2026-07-28. Estimates only — this does not replace veterinary advice._