After trying the majority of the premium dog foods (Blue Buffalo, Orijen, Taste of the Wild, etc) I decided to try my.dog on Wellness Core. His stools have been much firmer and smaller. His energy level is amazing, he has stopped scratching and he loves this food. We actually started him on it the day after he was diagnosed with Parvo (Well, that's what the Vet was feeding him once he was able to eat, so we followed suit) While probably not completley true, I believe the nutritional value that this food contains, helped our Preston survive. Regardless of that anecdote, the food does wonders, and while it may be a little pricey, the amount of food required is less. It's worth every penny.