Grain Free Senior Trout with Salmon, Sweet Potato & Asparagus is Ideal for the older or overweight dog. Designed for the older dog, dogs with ailments and those dogs needing weight control. Produced with added Glucosamine, Chondroitin Sulphate and MSM to support cartilage for healthy joint repair and mobility. Created with 50% Samlon and Trout, with 26% being freshly prepared, provides a high quality low protein complete food rich in amino acids. Added pre-biotics MOS (Mannan-oligosaccharides) and FOS (fructo-oligosaccharides). Naturally preserved using rosemary extract. Contains no added artificial colouring Why Trout and Salmon ? Trout and Salmon are naturally rich in Omega 3 essential fatty acids which have anti-inflammatory properties and provide support for skin and coat and joint health. Why Asparagus ? Asparagus is rich in vitamins A, C and K plus folic acid, which all help contribute to general health and wellbeing.