Raisins or Grapes...
Essentially unheard of prior to 2001, raisin and grape toxicity seems to be recognized with increasing frequency. The ASPCA Poison Control Center has now documented over 50 cases of acute renal failure occurring due to ingestion of either grapes or raisins. Raisin toxicity also has been observed in a cat.
Affected animals generally begin to vomit within 6 hours after ingesting the raisins. Following this, the dogs might become anorexic, lethargic and may develop diarrhea. Renal failure became evident with 3 days. In the original report of 10 cases, half of the affected dogs died. With aggressive therapy for acute renal failure, the other 5 dogs survived.
Neither the toxic principal nor the minimum toxic dose is known at this time.
Pet owners should be advised to avoid giving raisins or grapes to their pets as treats and to seek veterinary care if large quantities are ingested or if the pet appears ill.
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