When my boy was still living I fed him Orijen Senior. Then, to my horror, I found out that this supposedly great food was actually killing dogs. I didn't change (he was almost 14 by then) and figured he got enough chicken and rice from sweating me out to get the nutrients needed. I'll just go to Pro Plan when I get another dog (sporting breed for me ...likely another black Lab).You weren't feeding a grain free diet, by chance?...