Canine Freestyle
CFF is the US-based freestyle organization most associated with technical heelwork foundations and a guild-based club structure. Purebred and mixed-heritage dogs are eligible. Handler membership is encouraged and provides discounted trial entries — annual dues are $25, with $200 lifetime membership available. Events run under the CFF Regulations for Freestyle Competition (2014), which CFF sells by mail rather than posting online, so check the premium list for eligibility details.