Brimming with goodness and full of natural flavor, ACANA Mackerel & Greens Treats contains one single, easily digestible animal protein and rewards your dog according to his evolutionary needs. Wild-caught from cold New England waters and bursting with flavor and healthy omega-3 fatty acids, our Atlantic mackerel arrives fresh and whole at our DogStar® kitchens, where it is gently freeze-dried then paired with fresh Kentucky spinach and sarsaparilla root to create a delicious treat for your cherished dog.