You may be killing your dog, and not even know it! Here is the list of toxic foods never to feed your dog: raisins, grapes, onions, chocolate, cocoa, avocados, BREAD, Tryptophan that's found in turkey, and macadamia nuts.As an aside, it is amazing how dangerous BREAD is to animals. Non-humans, such as, cats, dogs, horses, ducks, and so on are unable to process bread. Eventually, non-humans, ...