Via Business Insider:
Their newest robot is built on the principle of “recovering, storing, and releasing energy based on a natural model” in order to move around. In this case, the “natural model” is a kangaroo, so Festo’s robot literally jumps to get from A to B.
Click the link to see more: Festo Kangaroo Robot – Business Insider
Not just a toy. This has potential search and rescue among other things.