One line of research and development in robotics, that has received increasing attention in recent years, is the development of biologically inspired robots. The idea is to gain knowledge of biological beings, whose evolution occurred over millions of years, and apply the knowledge thus acquired to implement the same methods of locomotion (or at least use the biological inspiration) on the machines we build. It is believed that this way it is possible to develop machines with capabilities similar to those of biological beings in terms of locomotion skills and energy efficiency. One way to...