Snakes are exceptionally agile, which allows them to slide, squeeze, climb or slither into places that people and most other types of robots can't reach. This makes snake robots very attractive in spite of the hair-raising complexity of the required

Boston Dynamics, best known for the quadruped robots BigDog and Little Dog, have now developed a dynamically balancing bipedal robot that uses a toe-to-heel walking method very similar to a human. The robot, called PETMAN, can be seen in the