"In response to reports of dogs developing kidney failure after eating large amounts of grapes or raisins, the ASPCA Animal Poison Control Center (APCC) conducted a review of all related cases in its database. Veterinary toxicologists found that all of the companion canines developed vomiting within six hours of ingestion; the estimated amounts of grapes or raisins eaten ranged from nine ounces to two pounds. Other commonly reported signs included diarrhea, anorexia, lethargy and abdominal pain, and all of the dogs developed evidence of kidney disfunction. Adds APCC's Charlotte Means, DVM, "Whether the ingested grapes were purchased fresh from grocery stores or grown in private yards didn't seem to matter, nor did the brand eaten." Clinical signs lasted for several days--sometimes even weeks. And after aggressive treatment, which included intravenous fluids and medications, half of the dogs recovered, while the others died or had to be euthanized."

Visit the ASPCA website for more info. Please do not feed grapes or raisins to your dog.