I fed Blue Buffalo Wilderness Puppy, 15lbs of it, over about 4 months or so to my Rat Terrier mix with no problems. I switched him to it from Nutro Natural Choice Small Breed Puppy, and it made a great difference for him as far as his coat becoming nice and shiny (which MAY also be due to the fish skins he was being stuffed with at the time as well), but I attribute part of the effect to the higher-quality that BB Wilderness is. Bruno had no issues with the food – no vomiting or stool problems that were food-related (he used to get carsick as a puppy, and he would vomit, but that was in the car only). Now I feed other foods, but I would feed Blue Buffalo Wilderness again one day, and keep it in our rotation, because he had no issues with it. And that’s just our personal experience with this food.
