Javier Isabel's Kame is a quadruped robot that can skitter across the floor or leap in the air on its remarkably nimble four legs that are powered by eight independent servos. Kame is entirely made from 3D printed PLA parts, including its legs, joints and body. Each leg has two servos with eight degrees of movement that allow them to act as a parallelogram mechanism giving his movements a natural feel. The robot's design was created in FreeCAD, and all of its components were 3D printed on an open source 3D printer. The entire project is entirely open source so it is a great educational project, and is available on both GitHub and Thingiverse. You can read more about Kame over on 3DPrint.co: http://3dprint.com/117644/kame-hopping-3dp-robot/