Learning about Tail Injuries and What Causes Them Tail injuries often develop from repetitive energetic movement, unexpected hits against doors or corners, and minor self-inflicted wounds that occur during playful activity. In many cases, happy tail syndrome results from repeated trauma to the tail tip, causing persistent bleeding and soreness. https://newservice330.ampedpages.com/article-to-know-on-k9-tailsaver-and-why-it-is-trending-65466488