Understanding Dog Tail Injuries and How They Happen Tail injuries often develop from regular strong tail wagging, unintentional knocks against hard surfaces, and sometimes scratches or nips caused during play. In many cases, happy tail syndrome results from repeated trauma to the tail tip, causing splits, bleeding and ongoing irritation. https://collaborativeshell129.blogspothub.com/37430208/article-to-know-on-dog-tail-guard-and-why-it-is-trending