The genius robotic specialist nerds at Boston Dynamics and DARPA never quit. For years they have been working on four-legged autonomous walking robots.
Their latest development is the horse-like LS3 robot. With just a few verbal commands, the bot starts up and follows the human leader through an natural obstacle course successfully.
The video is only a week old, and is already nearing one million views. It is further covered on Atlantic, CNet, and Awesomer.