BigDog is the alpha
male of the Boston Dynamics family of robots. It is a quadruped robot that
walks, runs, and climbs on rough terrain and carries heavy loads. BigDog is
powered by a gasoline engine that drives a hydraulic actuation system. BigDog's
legs are articulated like an animal's, and have compliant elements that absorb
shock and recycle energy from one step to the next. BigDog is the size of a
large dog or small mule, measuring 1 meter long, 0.7 meters tall and 75 kg
weight.