[GZG] Four legs good !!

Hello

Here is a you-tube video of a state-of-the-art four-legged robot: "Big
Dog":
http://www.youtube.com/watch?v=W1czBcnX1Ww

Pretty impressive how it handles broken ground and recovers from 
stumbling on slippery ground.

The configuration of the articulated joints on the legs is interesting, 
which has no natural prototype, as far as I can see.

Greetings
Karl Heinz

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