Boston Dynamics video of its quadruped robot BigDog

When you first start watching this video it may look like some sci-fi movie computer graphic animation, of a cross between the Fly and quadruped version of the aliens in the Charlie Sheen Sci-Fi movie Invasion.

The Boston Dynamics Robot, developed under a DARPA grant weighs 235 lbs and is seen in the video at one point traversing hilly landscape with a 350 lb load. The scene of the robot slipping on an icy surface, and recovering its balance is eerily bio-mimetic.