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SESK: Stuff Everyone Should Know · sesk.info/dog-grapes-kidneys

Grapes and raisins can cause damage to which part of a dog's body?

The kidneys.

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  1. The ears
  2. The teeth
  3. The kidneys ✔

Why: Tartaric acid is thought to be the toxic part, and dogs cannot process it, so grapes or raisins can lead to kidney damage. Never feed them as treats.

Huh, didn't know that: Raisins are dried grapes, so they count as the same risk.

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What did the waiter say to the dog when he brought out her food? Bone appétit.
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References

Answer: The kidneys. Tartaric acid is thought to be the toxic part, and dogs cannot process it, so grapes or raisins can lead to kidney damage. Never feed them as treats.

  1. ASPCA, People Foods to Avoid Feeding Your Pets www.aspca.org/pet-care/aspca-poison-control/people-foods-avoid-feeding-your-pets
    Since dogs are not able to process tartaric acid, exposure to grapes/raisins can lead to kidney damage.
    Checked 2026-10-10.

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