For puppies, breast milk is important because the nutrients that contain immunity in milk are like the best protection that helps them grow up strong and have good development in the early stages of their lives. Pedigree Puppy, the next good thing after mother's milk, has zinc and vitamin A to help strengthen the immune system, along with calcium and phosphorus that help make bones and teeth strong. It also has DHA and choline that are essential for the nervous system. Let Pedigree Puppy Formula NutriDefense help him grow up strong and have fun with every learning experience.