To identify a "dog bully" at the dog park, observe the following behaviors: 1. Excessive Rough Play: The dog plays too rough for others, often ignoring social cues to stop. This includes tackling, chasing relentlessly, or pinning other dogs down. 2. Ignoring Warnings: Dogs communicate boundaries through growling, barking, or showing teeth. A bully ignores these warnings and keeps pushing. 3. Targeting a Specific Dog: The bully may pick on one dog repeatedly, following them and causing discomfort