While it’s true that you can start training your puppy to walk with you and obey your commands very early on in her development, you might not want to head out into the great wide world just yet. Veterinarians recommend keeping your pup away from dog parks and avoiding walking outside until after she has had all of her core vaccinations.
You can’t get a rabies shot until your pup is at least three months old, and he won’t receive his final booster until 16 weeks — or longer, depending on when you start the process. Already you’re looking at four months or more, which is a lot of time for a growing dog to have pent-up energy and pick up bad habits.
School Dogs Training 