Puppies have different dietary needs to adult dogs. As you know playful puppies expend alot of energy being...well...just darn cute puppies. More protein to help their bodies grow, higher calories to compensate for how much energy they use growing and playing. Did you know? About half of the calories puppies take in are spent on tissue growth and development. It is always best to consult your veterinarian as feeding large breed vs. small breed puppies can be very different.