Understanding Tail Injuries and How They Happen Injuries to a dog’s tail often develop from constant vigorous wagging, unexpected hits against hard surfaces, and sometimes scratches or nips caused during play. In many cases, happy tail syndrome develops from constant damage to the tail’s end, causing persistent bleeding and soreness. https://keencluster341.blogthisbiz.com/45892230/yes-good-dog-tail-injury-cover-do-exist