Starting your puppy off on the right paw takes the right balance of essential nutrients. And that's exactly what Science Plan™ Puppy provides; nutrition to help a puppy's body grow strong and healthy. Plus, it includes the Superior Antioxidant Formula, the foundation for a lifetime of good health. Science Plan™ Puppy is also designed to meet the needs of pregnant and nursing bitches, which may need 2 to 4 times more energy than when not pregnant or lactating.