Embodiments of the present invention provide a tracking apparatus (100) and method that are operable to efficiently track an animal. The tracking apparatus (100) is operable to be worn by an animal, determine its current geographic location, and transmit information relating to its current geographic...http://www.google.com.tw/patents/US7602302?utm_source=gb-gplus-share專利 US7602302 - Animal tracking apparatus and method
