If you can get to a local grain or feed store ,you might ask who or where you can purchase River Run by the company Cargill, Incorporated the general office is in Minneapolis,Mn.55440. This is availlable in different protein contents and a variety of different sized bites. I have rotts and my female is extremely--PICKY. their coats always drawww attention to other people that see them. I feed 21%protein in the winter only as high protein diets in the hot summer months can/may cause hot spots on a large dogs skin. I have had puppy buyers of my previous litters comment on the coats of our pups and how they have never seen such beautiful shiny fur on puppies at sixtoeight weeksm of age. Put it this way this is the only dogfood my female rott will eat. You know the old comment that if the dog gets hungry it will eat eventually?? Not Shy she will go for days without eating.!must be good stuff to her..!!