This past week I have been including green grapes in my dogs' diet as I thought that the were healthy for them (I have been following Juliette de Bairacli Levy's diet for dogs, and she fed her dogs' raisins and grapes); Mon-Friday, I gave my dogs 5-10 grapes along with their meals (one dog is 43 lbs, and one is 61 lbs). They have shown no symptoms (no vomiting, diarrhea, etc), but tonight I stumbled upon research articles explaining that grapes can cause acute renal failure in dogs and fatality in dogs, and I am currently freaking out. They both have been drinking water and urinating normally, but I am still so worried. Should I take them to the vet? Have any of you had experiences with your dogs ingesting grapes? I am not giving them grapes again, and I am horrified at the fact that I ignorantly gave my dogs something so toxic.