Small dogs have a special diet as their metabolism is a lot faster. They need more calories per pound, and this also includes the amount of protein they need. There is 28% protein in this enhanced nutrition formulation, giving them the essential amino acids to keep their little but energized bodies active and healthy. Other nutrients like L-Carnitine also help their metabolism, while other antioxidants boost their immune system as small breeds are known to have a longer lifespan.