After the Runbot created in 1999, there's now
Runbot2, developed by the Tokyo Polytechnic University.
Even if it still has loads of wires connected to its body, this quadruped robot moves very naturally.
It can run like an animal (a dog or a cat for example) in a way that clearly shows us the rapid advances of robotics.
Runbot has its own internet site:
www.runbot.jp
http://www.youtube.com/watch?v=C3Zgt1ap-Qo
via pp