We rotate mixtures of home cooked veggies and meats, Nutro Natural, Eukanuba, and Science Diet Natures Blend in addition to Flax Seed Oil and a few other dietary supplements. Three get glucosamine, one doesn't as she is allergic to shell fish and I'm not willing to risk it. One can't eat most of the 'natural, organic' foods that
supposedly 'the best' so we had quite a time figuring out a good, healthy mix that worked for everyone.