WildCat is a four-legged robot being developed by the Pentagon to run wickedly fast on all types of terrain. So far WildCat has run at about 16 mph on flat terrain using bounding and galloping gaits. The video above shows WildCat's best performance so far. WildCat is being developed by Boston Dynamics with funding from DARPA's M3 program.  Who knows what the military might use it for in the future.