Thank you for this well-researched article, Jennifer. What do you think of the Evolve brand of dog food? I've bookmarked this for future reference. Our vet gave us a sample bag of Science Diet for our puppy. I think we'll use it and then go back to Wellness, which is what I've been feeding him. Our older dog has been eating Evolve for awhile now, but honestly, choosing a dog food has become very overwhelming.