John860 writes "The US company Boston Dynamics has released an amazing new video of its quadruped robot BigDog. The highlight of the video (at 1:24) shows how the robot starts slipping on ice, almost falls several times, but finally regains its balance and continues walking. The video also shows the robot's ability to cope with different types of terrains, climb and descend steep slopes, and jump. Two years ago, the older version of BigDog was already able to climb slopes, keep its balance after a strong kick, and walk on rough terrain like stones, mud, and snow. The new version weighs 235 lbs and can carry a payload of up to 340 lbs, a factor of 4 better than its predecessor."