The document provides 5 tips for dog owners to demonstrate pack leadership at the dog park according to Cesar Milan. The tips are to ensure the dog is healthy, not use the park as a substitute for exercise, be aware and in control of your dog's behavior at all times, know if your dog is suitable for the dog park based on its social skills and training, and find alternative ways to introduce dogs that need more control to other dogs. The document emphasizes the importance of owners establishing themselves as calm pack leaders through exercise and training to prevent aggression in dogs that arises from frustration and dominance.