Feb 21 2009
Grapes & Raisins: Toxic in Dogs
It’s no secret now that grapes and raisins can cause some dangerous reactions in dogs. Some dogs can even go into acute renal failure after ingestion. What is scary is that after all the research being done into this, the mechanism within the grapes/raisins causing this is still unknown. It is also unknown whether other species besides dogs are affected.
Since there’s still so much to be learned on what exactly is causing this, therefore every grape or raisin ingestion should be considered potentially dangerous and veterinary attention should be sought. The first sign is likely to be vomiting, and most often that is when owners notice their dog had been eating this, as they will come up in the vomit. This usually occurs within 2 hours of eating it, and signs of kidney failure can develop with 24 hrs to several days afterwards. This may be noticed by increased thirst, increased urination, no urination, and/or neurological signs.
IV fluid therapy given after activated charcoal to absorb the toxic substance can help prevent renal failure from starting if done early enough. Supportive care and monitoring are especially important in these cases. Generally, if kidney values on blood-work appear normal after 72 hours, chances are good it was avoided. A life threatening toxicity can be avoided by quick detection and proper care.
Not every dog reacts to grapes and raisins similarly. It is likely that in high amounts, all dogs will have a problem, but some dogs are sensitive enough to go into kidney failure after just 0.3 ounces per pound, while others can have much more and not be phased at all. The safest thing to do here? Avoid giving it intentionally, no doubt; and be careful with what is in your dog’s reach- both inside and out.
Christine, LVT
