The three videos are part of a trilogy - best to watch them in order:
http://muse.jhu.edu/journals/asr/v007/videos/7.1mc_dog_trilogy1.mpg
http://muse.jhu.edu/journals/asr/v007/videos/7.1mc_dog_trilogy2.mpg
http://muse.jhu.edu/journals/asr/v007/videos/7.1mc_dog_trilogy3.mpg
