Understanding Tail Injuries and How They Happen Tail injuries typically arise from regular strong tail wagging, unintentional knocks against hard surfaces, and sometimes scratches or nips during games or exercise. In many cases, happy tail syndrome results from repeated trauma to the tail tip, causing splits, bleeding and ongoing irritation. https://soaringzone21.theisblog.com/38900974/the-growing-craze-about-the-dog-tail-protector