Boston Dynamics mission statement:
"PETMAN is an anthropomorphic robot for testing chemical protection clothing used by the US Army. Unlike previous suit testers, which had to be supported mechanically and had a limited repertoire of motion, PETMAN will balance itself and move freely; walking, crawling and doing a variety of suit-stressing calisthenics during exposure to chemical warfare agents. PETMAN will also simulate human physiology within the protective suit by controlling temperature, humidity and sweating when necessary, all to provide realistic test conditions."
Just imagine war of the future... armies of bipedal robots shooting off machine guns. Wow. Skip ahead to 0:25, PETMAN recovers from a fall just like Big Dog.