Boston Dynamics, the DARPA backed research agency, specializing in developing combat-ready robotics and simulations machines, have released a new video of their “war mule” robot, named Big Dog. Resembling our favorite four-legged friend, Big Dog is run by a gasoline-powered engine (hence the noise), trots at 3.3 mph and can carry a load of up to 120lbs, if not more. Scary, spooky and fascinating all at one time.