I have a 3 year old Boston Terrier with a sensitive stomach and she rarely has solid stool. I have tried almost every premium brand including bland foods like CA Natural. Within 3 days of changing over to Merrick Wilderness Blend kibble my dog had solid stool. I have never been so happy over poop. Within 2 weeks her fur began to get softer and shinier. Her fur has even began to loose the red tint and become blacker. I couldnt be happier with the results from this food.