Explanation
Grapes and raisins contain an unidentified toxic substance that can lead to acute kidney failure in dogs. The exact mechanism of toxicity is unknown, and even a single grape can be fatal for some dogs regardless of their size or breed.
Recommended amount
None. Grapes and raisins should be strictly excluded from a dog's diet.
Risks
Acute renal (kidney) failure, vomiting, diarrhea, and potential death.
Symptoms to watch for
Vomiting, diarrhea, lethargy, dehydration, increased thirst, or absence of urination.
Safer alternatives
Safe treats for dogs include blueberries, sliced apples (without seeds), or bananas in moderation.
Frequently asked questions
No, even one grape can trigger a toxic reaction in sensitive dogs.