I bred and showed dogs for a few years and swear by Eukanuba made by Iams. It was recomended to me by a few top breeders so that is what I always fed and it kept my dogs healthy with nice shiney coats. Once, after I was already using it, I met a guy with a doctorate in animal nutrition. I asked him what was the best dog food and he also said Eukanuba followed by regular Iams and Nutrimax.