This video shows how puppies establish rank within their litter. Rank within a litter changes almost on a daily basis. When the litter in this video is given a meat bone you will see a level of puppy aggression that will probably surprise a lot of people. The fact is 6 to 8 week old puppies establish rank within the litter through play and biting one another. When puppies then move into their new homes many continue to think this is how they need to interact with their new pack members (you and your family). This is one very good reason why new puppy owners need to learn how to manage and train puppies.