Founder of Boston Dynamics Marc Raibert showed off one of his latest robotic creations in London on Monday, called Spot Mini, a four-legged robot with a mechanical arm mounted on its back. Going on show to the public for the first time at TechCrunch Disrupt 2016 in the English capital, the robot is electrically powered and hydraulically actuated, with sensors in its head that allows it to navigate and negotiate rough terrain.