Understanding Dog Tail Injuries and What Causes Them Tail injuries frequently happen from frequent vigorous wagging, occasional bumps against solid objects, and sometimes scratches or nips during games or exercise. In many cases, happy tail syndrome is triggered by continuous injury to the tail’s end, causing persistent bleeding and soreness. https://trailblazingline874.angelinsblog.com/37468362/yes-good-k9-tailsaver-do-exist