I feed Canidae and raw. I didn't think about you not being able to find all of the premiums we have here! For a Rottie pup, I'd reccommend you try to find the Pro-Plan Select. (might be more difficult, as not all grocery stores carry it here. You often have to go to pet store.) If you can find the Select Turkey, single source protien, it is an upgrade from Purina, Pedigree and reg. Pro plan formula. Comparable to Royal Canins' Sensible Choice. I've found large breeds do quite well on this food if you have to feed a "grocey store" food. I have fed this to boarding dogs whose owners are not using a premium and have not had a problem with palatablitity, loose stools, or skin problems and ingredients are, again, comparable to some of the mid-range premiums like Sen. Choice.