Is it safe to feed large breed puppy food to my regular puppy?

Puppy food is higher in calories and has different quantities of fat, protein and certain vitamins and minerals than adult dog food. As long as Max is not overweight it should be okay for him to have puppy food as long as he doesn't develop diarrhea or other gastrointestinal upset.

I would not recommend pupy food for adult dogs unless absolutely no alternative is available. Puppy formulas tend to be higher in minerals and proteins for growth and are richer than recommended for regular maintenance diets

Large or giant breed puppies should be fed an appropriate large/giant breed puppy diet until about 18 months of age. The reason being that they develop slower than other breeds. Many do not stop growing until around 2 years of age. Most above average and premium brands have a diet for large breed puppies. Brands include Canidae, Orijen, Acana and Taste of the Wild. Choose the diet that is easy to buy, that Sarge will eat and will not cause stomach upset. Personally, I'm not a fan of the BB line. This is my own opinion based on personal experience and in no way reflects the opinion of either Petco or Petco Pet Education Center, formerly Petcoach.

Yes, puppies need to eat a puppy formula until they are 1 year old. Large breed puppies (who will mature to 55lbs or more) NEED to eat a large breed puppy formula. Here is a helpful link: https://www.petcoach.co/article/feeding-puppies-what-when-how/ Please feel free to post any additional questions.

Lifetime large breed dog food is formulated for all life stages, including puppies. Since he is already 60 pounds, you can begin to transition him to this diet at any time. Please switch diets gradually by mixing the old and new diets together for 5-7 days to ease the transition.

Ralphie looks like a real cutie! Yes, it will be fine to finish the food you already have and then switch him to an adult large breed diet. Make sure to transition him over to the adult diet over a 5-7 day time period to help avoid any GI upset. That means you will need to mix in the puppy food with the new adult dog food and gradually switch him over. Please feel to post any additional questions.

Small breed food should not do any harm to a medium breed dog unless he has any specific medical conditions which require him to be on a specialised prescription food. Food for larger breeds can be supplemented for joint health and made with larger kibble for dental health so you may be loosing these benefits depending on the brand you are feeding