I used to feed my old dogs - Pedigree, Iams, Eukanuba, Science Diet, Nutro, Purina Mighty dog.. until i got my two yorkies and found out these brands were junk!.. never again will i put that kind of food near my babies mouths.
so far, i've tried.. Artemis (Osopure), Canidae & Innova... when they are old enough i will be putting them on Innova EVO.
I don't like Pedigree, Iams/Eukanuba, Science Diet & Nutro only because most of their ingredients are by-products.. i think meaning they contain dead body parts of other animals, and some contain even sick animal parts or something like that.. for sure i will never buy frtom iams/eukanuba - iamscruelty.com
there is a great site about ingredients to avoid and stuff like that..
http://www.mordanna.com/dogfood/
i got it from another forum i am on