Purina Pro Plan Chicken and Rice for Puppies Nourish your large breed puppy with the wholesome nutrition he needs by serving him Purina Pro Plan Brand Dog Food Puppy Large Breed Chicken and Rice Formula dry puppy food. High-quality protein including chicken as the number 1 ingredient provides the building blocks he needs to maintain his active lifestyle. The special nutrient-rich formula is designed for puppies weighing over 50 pounds at maturity. Every high-quality ingredient in this super-premium large breed dry puppy food is carefully chosen for a specific nutritional or functional purpose.