Can my dog have grapes & raisins?

No

Grapes, in both their forms (raw and dried – raisins) can be extremely toxic for dogs. When discussing the grapes and raisins toxicity for dogs, the accent is put on the word can. Simply put, as interesting and unusual as it sounds, some dogs can eat tons of grapes without experiencing any side effects or signs of illness. On the other hand, for some dogs, even a few pieces of grapes can be not only toxic but also fatal. This peculiarity cannot be scientifically explained. It is believed that grapes toxicity in dogs is genetically determined and some dogs lack the enzymes necessary for metabolizing grapes. When it comes to grapes toxicity in dogs, it has been shown that age, size and breed are not influencing factors.

A dog intoxicated with grapes will show the following signs and symptoms:
• Complete loss of appetite
• Lethargy
• Vomiting
• Diarrhea
• Dehydration
• Abdominal pain
• Renal failure.
Since there is no way of determining whether your dog is or it is not predisposed to grapes toxicity and since there is no insured safe dose, it is best to assume that grapes and raisins are a prohibited food for your dog.