While school-aged children everywhere clear Target’s shelves to stock up on their school supplies in preparation for the year ahead, Chicago’s dog trainers are buying their tasty treats and brushing up for a new season of dog training courses. And many pet parents are getting ready to enroll in those classes. Typically, when people think of dog training classes, they think puppies. We see a lot of people who stop training after puppy class, but here are Rover-Time's top five reasons to continue training your adult dog.