The traditional Chinese (TC) and transpositional (TP) methods of animal acupoint location result in different acupoint charts. Representative TC and TP equine zangfu organ shu-association acupoint charts are compared to each other and to a human chart. Despite their differences, practitioners of both methods appear to achieve equally effective therapeutic results - a phenomenon termed ''traditional Chinese/transpositional equal efficacy'' (TTEE). Common veterinary acupuncture practices, traditional Chinese medical theory, spinal cord anatomy, and a preliminary equine ''association segment'' chart are proposed to explain TTEE. The differences between the charts indicate that all documented animal acupoint locations should be explicitly described.