Amazing 'robot lion' revealed
Meet Atlas and WildCat - two amazing robots with the ability to balance.
They're the creation of US robotics company Boston Dynamics.
Atlas can walk across rough ground with ease, and even balance on one leg while being hit from the side by a demolition ball.
And four-legged WildCat can gallop at 16 miles per hour.
The robots have been developed for a competition and could one day be used in emergency rescue situations.