Boston Dynamics robot fights back against armed man to open door and enter room

Boston Dynamics' door-opening robot dog can now fight off humans. The company has published a new video that shows SpotMini, a small, four-legged robot, successfully open a door and walk through it, despite the efforts of a person armed with a hockey stick, who repeatedly tries to impede the robot. He initially attempts to prevent SpotMini's hand from reaching the door handle. When SpotMini eventually gets a good grip of it and manages to turn the handle and pull the door open, he tries to push the door shut. The I.F.O. is fuelled by eight electric engines, which is able to push the flying object to an estimated top speed of about 120mph.