Check this out! U.S. military scientists have developed robotic dogs of war which can follow troops over even the roughest terrain. Called Legged Squad Support Systems, the mechanical hounds can carry 400lb for 20 miles without refueling. There are also plans to make them talk. Lt. Col Joe Hitt, of the Defense Advanced Research Projects Agency, said, "We want a radio operator to be able to tell it to 'sit, stay'. Likewise, the robot could tell them, 'I'm stuck, wait'." The robo dogs were developed by Boston Dynamics with funding from DARPA and the U.S. Marine Corps. A video of them demonstrating what they can do has already notched up about 360,000 hits on YouTube. (Anybody else suddenly thinking about the Matrix right about now?)