On my second 40 lb. bag of Victor Hi Pro +. I'm feeding my 2 1/2 yr. old female twice a day,,,,,,equal amounts (1 1/3 c. each meal). It has the highest k/cal content of any of the others I've tried before (450 k/cal. per cup). My griff's poops are always really firm, they're smaller in diameter, and there's less of it so it appears there isn't much filler in this kibble. The dog is utilizing the ingredients well, so it seems.