BigDog is a dynamically stable quadruped robot created
in 2005 by Boston Dynamics with Foster-Miller, the
NASA Jet Propulsion Laboratory, and the Harvard
University Concord Field Station. BigDog is 3 feet
(0.91 m) long, stands 2.5 feet (0.76 m) tall, and
weighs 240 pounds (110 kg), about the size of a
small mule. It is capable of traversing difficult
terrain at 5 miles per hour (8.0 km/h), carrying
340 pounds (150 kg), and climbing a 35 degree incline.
Locomotion is controlled by an onboard computer
that receives input from the robot's various sensors.
Navigation and balance are also managed by the control