(Nanowerk News) BigDog is the alpha male of the Boston Dynamics robots. It is a rough-terrain robot that walks, runs, climbs and carries heavy loads. BigDog is powered by an engine that drives a hydraulic actuation system.
Now, BigDog can handle heavy objects, too:
The goal is to use the strength of the legs and torso to help power motions of the arm. This sort of dynamic, whole-body approach is routinely used by human athletes and animals, and will enhance the performance of advanced robots. The control techniques and actuators needed for dynamic manipulation are being developed by Boston Dynamics with funding from the Army Research Laboratory's RCTA program.