Why Are Grapes Harmful for Pets?

Grapes harbor an unidentified nephrotoxin causing acute kidney injury even at 0.3 oz/lb; vomiting within 6 hours leads to lethargy, abdominal pain, dehydration, oliguria, and renal failure in 24-72 hours. Dogs most sensitive (some breeds tolerant but risky); cats, rabbits similarly affected. Ban all varieties; vet for emesis, activated charcoal, IV fluids, dialysis if needed.