The machine, called Digidog, was accompanying human officers responding to a home invasion and barricade situation. Digidog joined the New York Police Department last year, which changed the machine's yellow color to blue and black and gave it a new name - it was initially named 'Spot' by its creators Boston Dynamics. The robotic dog, according to reports, was sent inside a building in the Bronx to climb stairs and investigate an area for a hostage situation – but no one was found. Scroll down for videos Residents in the Bronx, New York stopped dead in their tracks as a four-legged roboti...