The 4 legged LS3 robot, which is an upgraded version of big dog robot produced by Boston Dynamics for DARPA, has gotten more abilities like following people on command and it is much less noisy too, in comparison to the previous big dog model which sounded like a lawn mower in full speed. The robot, LS3, is an autonomous robot which is supposed to carry loads for soldiers in combat zones therefore increasing mobility. In addition to its autonomous navigation abilities, the robot is also able to avoid or deal with obstacles on its way, in order to continue its movement.

For reference, here is the video of the old big dog robot, which was built a few years ago.

https://www.youtube.com/watch?v=cNZPRsrwumQ

  boston dynamics, darpa, ls3