A legged ambulatory vehicle for transporting a load from a first location to a second location is disclosed. The ambulatory vehicle comprises a load that is able to shift the center of gravity of the ambulatory vehicle along a length of a beam assembly. Additionally, the leg assemblies of the ambulatory vehicle are configured to exchange places along the length of the beam assembly. Further, the vehicle is able to perform a number of gaits including a slow stable gait and faster dynamic gaits comprising striding, trotting, and bounding. The ambulatory vehicle is able to navigate rough terrain and steep slopes and navigate submerged.