Reaction of animal to environment change is the key point for ecologist. It can provide more accurate, real-time and comprehensive data when detecting the wildlife and measure environment parameters using networked sensor technology for monitoring, research and conservation of wildlife. This paper reviewed three aspects: (1) conventional detection technology, (2) the concepts and applications of the Internet of Things (IOT, in animal ecology, (3) advantages and disadvantages of IOT. The current theoretical limit of IOT in animal ecology also was discussed. Conclusively, IOT will be a new direction in animal ecological research, but still need to explore and develop the theoretical system and applying frameworks.