K9 Street League
K9 Street League has no parallel governing organizations in the United States. K9SL writes the rulebook, sanctions every trial, appoints judges, and maintains title records. There is one ladder, one rulebook, and one database. Many K9SL handlers also train and trial PSA, IGP, or APPDA — but those titles do not transfer into the K9SL system, and K9SL titles do not transfer the other direction. K9SL was built deliberately as the 'professional protection dog sport.' The four structural breaks from PSA, IGP, and APPDA: paid decoys (not volunteer helpers), prize money for handlers (not just rosettes), scenario design oriented to civilian street confrontations (not patrol-style or sport-pattern work), and social-media-native trial production (not video as an afterthought). The club-registration threshold is low — three members and one event per year — which lowers the barrier to forming local infrastructure but produces uneven geographic coverage.