I'm interested in hearing what the base of you dog food is and your opinion of it. I've fed mostly lamb and rice over the years and like it okay. I recently had to buy Chicken based food in a pinch and honestly Harley seemed to fill out a little more on it. (He's always been on the thin side.) The food itself smelled to high heavens though. I've always been told that lamb was healthier, but I'm not sure why.