Understanding Dog Tail Injuries And Why They Occur Tail injuries often develop from regular vigorous wagging, accidental impacts against walls or furniture, 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://powerbase53.pointblog.net/how-much-is-it-worth-for-k9-tailsaver-86982186