From the INTERNET;
Although the minimum lethal dosage is not known, grapes and raisins can be toxic to dogs when ingested in large quantities. The symptoms are gastrointestinal signs including vomiting and diarrhea, and then signs of kidney failure with an onset of severe kidney signs starting about 24 hours after ingestion. The amount of grapes eaten varied between 9 oz. and 2 lbs., which worked out to be between 0.41 and 1.1 oz/kg of body weight. It has been reported that two dogs died directly from the toxicity, three were euthanized due to poor response to treatment and five dogs lived.
Due to the severity of the signs and the potential for death, the veterinarians at the National Animal Poison Control Center (NAPCC) advocate aggressive treatment for any dog believed to have ingested excessive amounts of grapes or raisins, including inducing vomiting, stomach pumping and administration of activated charcoal, followed by intravenous fluid therapy for at least 48 hours or as indicated based on the results of blood tests for kidney damage. |