Pack work, using a group of dogs to influence the behavior of an individual dog, is an amazing tool which can create permanent change in a dog and help create a healthy balanced attitude and behavior. There are a variety of ways in which trainers use this concept to assist in the training of a client dog from simply using a senior steady, trained dog to calm a nervous nelly, to having a young dog mingle with a variety of well balanced older dogs. However, a number of trainers are using fascinating varieties of pack concepts to reach to even deeper layers of instinctive reprogramming of our typical modern, disorganized client dogs. Some examples of common modern pack work include: an off leash Working Pack Walk; Large Field Socialization, and its smaller versions; and leashed Migration Pack Walks, to name just a few. And while these are concrete modern teachable models of pack work, it is important to put this in historical context and understand that folks have been using dogs to teach other dogs for milleniums.