Learning about Dog Tail Injuries and What Causes Them Tail injuries typically arise from regular enthusiastic wagging, unintentional knocks against doors or corners, and minor self-inflicted wounds during games or exercise. In many cases, happy tail syndrome develops from constant damage to the tail tip, causing persistent bleeding and soreness. https://dedicatedanchor42.blogdigy.com/happy-tail-syndrome-treatment-knowing-the-best-for-you-59841715