A lot of people know that chocolate is toxic to dogs, but do you know that raisins and grapes are dangerous, too? They can cause renal failure. Onions, tomatoes, and peppers are not great for our canine friends either, so be careful of that leftover pasta added your dog’s food. I like to save the leftovers and use them as training treats rather than waste the opportunity by just mixing with their daily fare anyway. Here’s an email that came my way about the toxicity of raisins and grapes:
This was written by Laurinda Morris, DVM
Danville Veterinary Clinic
Danville, Ohio
This week I had my first case of raisin toxicity ever seen at MedVet. My patient was a 56-pound, 5 year old male neutered lab mix that ate half a canister of raisins sometime between 7:30AM and 4:30PM on Tuesday. He started with vomiting, diarrhea, and shaking about 1:00AM on Wednesday but the owner didn’t call my emergency service until 7AM.
I had heard somewhere about raisins AND grapes causing acute Renal failure but hadn’t seen any formal paper on the subject. We had her bring the dog in immediately. In the meantime, I called the ER service at MedVet, and the doctor there was like me - had heard something about it, but….Anyway, we contacted the ASPCA National Animal Poison Control Center and they said to give IV fluids at 1 1/2 times maintenance and watch the kidney values for the next 48-72 hours.
The dog’s BUN (Blood Urea Nitrogen) was already at 32 (normal less than 27) and creatinine over 5 (1.9 is the high end of normal). Both are monitors of kidney function in the bloodstream. We placed an IV catheter and started the fluids. Rechecked the renal values at 5PM and the BUN was over 40 and creatinine over 7 with no urine production after a liter of fluids. At the point I thought the dog was in acute renal failure and sent him on to MedVet for a urinary catheter to monitor urine output overnight as well as overnight care.
He started vomiting again overnight at MedVet and his renal values have continued to increase daily. He produced urine when given lasix as a diuretic. He was on 3 different anti-vomiting medications and they still couldn’t control his vomiting. Today his urine output decreased again, his BUN was over 120, his creatinine was at 10, his phosphorus was very elevated and his blood pressure, which had been staying around 150, skyrocketed to 220..He continued to vomit and the owners elected to euthanize.
This is a very sad case - great dog, great owners who had no idea raisins could be a toxin. Please alert everyone you know who has a dog of this serious risk. Poison Control said as few as 7 raisins or grapes could be toxic. Many people I know give their dogs raisins or grapes as treats including our ex-handler’s. Any exposure should give rise to immediate concern.
Confirmation from Snopes about the above: http://www.snopes.com/critters/crusader/raisins.asp