BigDog ‘mule’ robot wreaks havoc with herculean throwing arm

Boston Dynamics’ BigDog rough-terrain robot just got even more terrifying, with the addition of a front-mounted arm that lets it toss around cinderblocks like soda cans. To get the job done, the 240-pound quadruped uses the same approach as human athletes, recruiting the strength in its legs and torso to power the throw.