Wow! I knew about onions and chocolate, but I have given my dogs grapes often ~ not a lot at one time, but when I'm eating some I might give them each two or three. And Raisins - Yikes! Just this morning I let them finish my bowl of Raisin Bran with about a half dozen raisins still floating in the bowl! I haven't read the links but certainly will do so! Thank you!