The length of time a dog is considered a puppy for food depends on the breed and the size of the dog. u003cbru003eu003cbru003eIn general, most puppies are weaned off of their mother's milk and onto solid food by 6-8 weeks of age. u003cbru003eu003cbru003eFrom there, they will typically continue to eat a puppy-specific formula of dog food until they are between 9-12 months old. u003cbru003eu003cbru003eAt this point, most dogs will have reached their full adult size and will need to transition to an adult formula of dog food.u003cbru003eu003cbru003eHowever, some larger breeds may continue to grow and develop beyond 12 months and may need to stay on a puppy formula for longer. u003cbru003eu003cbru003eIt's important to consult with your veterinarian about your dog's specific nutritional needs, as they can provide guidance on when to switch to an adult formula and how to ensure your dog is getting all the nutrients they need for optimal health. u003cbru003eu003cbru003eAdditionally, it's important to monitor your dog's weight and adjust its food intake as needed to prevent obesity, which can lead to a variety of health problems.