I have 3 styles Of Dog | Puppy Obedience Classes In the Appleton Area for you to Choose from, Just select the class that is perfect for you and your family! Then email me for your personalized free In-Home Evaluation! Puppies go through well-defined developmental stages. Puppy classes are designed to utilize the sociability of young puppies. However, the socialization period of dogs ends at around 12-14 weeks of age. Up to that age, puppies can readily learn not to fear new things, and to develop appropriate, social behavior. If this opportunity to shape puppy behavior is missed, the puppies are likely to show behavior disturbances later in life. Therefore, in order to maximize the benefits of puppy classes, puppies should be enrolled at 7-10 weeks of age if possible, the sooner the better.