Remember Big Dog? Well now its developers are introducing a quieter, bipedal version they’re calling Petman. Boston Dynamics says Petman will be used to test military clothing while “walking, crawling and doing a variety of suit-stressing calisthenics during exposure to chemical warfare agents.” Petman can also mimic human physiology by sweating inside the clothing if the test were to call for it. And remember how Big Dog couldn’t be pushed over? Well, neither can this two legged version. Only a year and a half between the two prototype releases…wow…quite remarkable. What are we gonna see by spring 2011?

Via Wired