'WildCat' robot put through its paces
7 October 2013 Last updated at 11:10 BST
US robotics company Boston Dynamics releases new footage of WildCat, its quadruped robot.
WildCat is being developed to run fast on all types of terrain.
So far, WildCat has run at speeds approaching 16mph (26kph) on flat terrain using bounding and galloping gaits.