Interesting. I noticed this statement:
Most of the ingredients that are included in the associated diets are also found in human diets, but dogs often eat them in even higher quantities because most dogs eat a single commercial pet food, rather than a variable mixture of multiple foods as humans do.
I wonder if rather than go completely to grain free or raw diets, we would do better to incorporate them into our dog's existing diet. Maybe substituting 1/3 of the dog's grain-based kibble with grain-free, we would be providing a more well-balanced diet for our dogs. "Everything in moderation" so to speak. Even with raw diets, owners tend to stick to the same ingredients all the time.
