Foods Your Dog Should Never Eat - Grapes
http://healthydogsguide.blogspot.com/2015/03/foods-your-dog-should-never-eat-grapes.html
Grapes and raisins have often been used as treats for dogs. But it's not a good idea. Although it isn't clear why, grapes and raisins can cause kidney failure in dogs. And just a small amount can make a dog ill. Repeated vomiting is an early sign. Within a day, the dog will become lethargic and depressed. The best prevention is to keep grapes and raisins off counters and other places your dog can reach.