The plaintiff was knocked down and severely injured by a rambunctious, playful eight month old, 110 lb. English mastiff. No bite occurred but the plaintiff broke her leg due to the impact of this exceptionally large dog. Dr. Polsky was retained by plaintiff’s counsel. Questions Dr. Polsky addressed in this action with concern the danger a dog of this size presented to people in the context of a dog park, and whether the owner maintained this dog under reasonable supervision during the time the dog was in the park.