NutriSource Seafood Select Grain Free provides super premium nutrition in a scientifically formulated easy to digest food. Real Salmon is the #1 ingredient that features excellent palatability, digestibility, and tastes dogs love. Salmon is a source of high quality protein to help maintain your dogs muscle mass and strength. Seafood Select Grain Free features the NutriSource exclusive âGood 4 Lifeâ system and is made with the finest quality ingredients available. NutriSource Seafood Select Grain Fee combines Salmon and carefully selected ingredients in the precise blend to balance all essential nutrients necessary for optimum health, well being and long life. Readily available nutrients in Salmon go to work on the inside, resulting in less waste.