Purina pro plan puppy large breed robust optistart chicken has been specially developed by nutritionists and veterinarians to meet the needs of large breed puppies with a robust physique and an expected adult weight of 25 70kg when fully grown these dogs can have up to 50 more body fat than athletic dogs with the same chest circumference meaning that they require more energy and will experience more strain on their joints this dry dog food contains the optistart formula which is an effec