SAN FRANCISCO, Dec 16 (Reuters) - Big Dog, a four-legged robot that can climb muddy hills, and Cheetah, a robot which can outrun the fastest human, are among the robots that now belong to Google Inc.

MIT's Cheetah robot has finally been let off the leash -- and boy can it run. Watch as it bounds across a grass field, and even jumps over a hurdle. It isn't quite up to the evolutionary magnificence ...

Google strengthened its foray into robotic technology Friday after acquiring an engineering company known for its development of uncannily deft robots. Boston Dynamics, an engineering company ...