|  | 
         
          | Description: 
             The frogbot's spring-loaded 
            leg allows it to hop relatively quickly across rough terrain. The 
            latest version, not shown, includes wheels for rolling short distances. |   
          | Source: 
             Jet Propulsion Laboratories/California 
            Institute of Technology |   
          | Story:  Exploratory 
            robot hops and rolls TRN December 13, 2000
 |   
          | TRN Categories: 
             Robotics |   
          | Form: 
             Still |  |