how old is a dog when considered to be an adult?
While they may grow up and begin to look less like a typical puppy, puppies continue to need extra nutritional support for quite a lot longer than you may think. Puppies mature into adults at a different time, which means that a large dog breed will mature into an adult at about 15 months, while smaller breeds will be puppies for only 9 months. So, youâll need to feed a larger dog breed specially formulated puppy food for much longer than you would a smaller dog breed.