An apparatus and method for monitoring and controlling the position of an animal. A mounted subsystem, affixed to an animal, includes a first computer control system having a first input/output device (first I/O), a position determining system (PDS), a first transceiver, sensors, and stimulators....http://www.google.fr/patents/US5791294?utm_source=gb-gplus-shareBrevet US5791294 - Position and physiological data monitoring and control system for animal herding
Position and physiological data monitoring and control system for animal ...