Canine compulsive disorder (CCD) - including tail chasing, flank sucking, and light chasing - causes significant distress and welfare harm in affected dogs, and is often misunderstood by owners.
Compulsive behaviors in dogs indicate significant underlying distress. They typically originate in conflict or frustration and become self-reinforcing over time. Affected dogs may spend hours per day in compulsive repetition, reducing time for normal positive experiences. Management requires both pharmacological intervention (typically SSRIs) and behavioral modification to address underlying triggers. Early intervention when compulsive behaviors first appear gives the best prognosis.