He may seem tough but he also has his sensitivities. The Blue Valley food series also caters for dogs with a sensitive digestive system. To this end, we developed a food based on fish as the main ingredient, rich in omega 3 and 6 fatty acids from natural sources. The food also contains glucosamine to maintain and treat joints and bones. Blue Valley fish-based adult food allows your dog a pleasant and active lifestyle even if he is a bit sensitive.