Royal Canin Maxi Adult is suitable for Large Size Dog Breeds. Features High Digestibility. Helps promote optimal digestibility thanks to an exclusive formula including very high quality protein and a balanced supply of dietary fibre. Bone & Joint Support. Helps support large breed dogs’ healthy bones and joints, which can be placed under stress by body weight. Omega 3: EPA-DHA. Enriched with Omega 3 fatty acids (EPA-DHA) to help maintain healthy skin.