Eukanuba Adult Large Breed combines high quality protein with over 50% more glucosamine and chondroitin sulfate (vs. Eukanuba Adult Medium Breed) to help support lean muscles and agile joints. This complete and balanced diet contains optimal levels of fat and carbohydrates to help fuel your dog's activity needs. DHA and antioxidants help support healthy brain function while Eukanuba 3D DentaDefense helps reduce tartar buildup.