Crittercam is a small package of instruments including a camera that can be attached to a wild animal to study its behavior in the wild. National Geographic's Crittercam is a research tool designed to be worn by wild animals. It combines video and audio recording with collection of environmental data such as depth, temperature, and acceleration.[1] The live feeds help scientists experience an animal's daily routines. Crittercam was invented by National Geographic marine biologist Greg Marshall in 1986.[2][3] Since then it has been employed in studies on over 40 marine and terrestrial animals.