It may not make the same freaking scary noise as Big Dog, but Little Dog is even creepier than its big brother. I think it is because of its small size. Smaller creatures are always creepier, even when they fail.
https://gizmodo.com/new-video-of-bigdog-quadruped-robot-is-so-stunning-its-368651
The robot was programmed by Katie Byl—currently at the Harvard Microrobotics Lab—and I don’t want to be anywhere near it. [Harvard Microbotics and Locomotion via BotJunkie]