This robot, with the odd configuration of the knee joints, looks more like two guys trying to carry a couch than a pack mule, but the idea is to create a robotic mule for the military. Cool as that is, what's wrong with using an ACTUAL pack mule?
Gosh I love DARPA!
BigDog is being developed by Boston Dynamics with help from Foster Miller,the Jet Propulsion Laboratory, and the Harvard University Concord Field Station. Development is funded by the DARPA Defense Sciences Office.