If interested, I could send some info on an all natural Raw diet for ferrets. Both of my dogs have been on a Raw diet for three years and I'll never go back to kibble! Best move I've ever made with them! Ferrets, like cats and dogs, are carnivorous, so a diet of Raw meat and bones would be superior to most kibbles. I have nothing against people feeding to kibble (to each his own) and am glad to see that you have researched kibbles to find the best available, but am always willing to help someone that is interested in switching to Raw. Though I do not own any ferrets, I know of people that do own them and have them on a Raw diet and would be more than willing to share info.