Boston Dynamics' BigDog is one of our favorite insane-level DARPA projects; a robotic pack-mule that can carry 400 pounds of kit for troops. At some point, the Massachusetts mechanics decided the bot would be far better if it was the size of a bull, or, you know, an SUV. The Alpha Dog loses the un-stealthy buzzing noise of its predecessor, has a range of 20 miles and can take much more punishment. If you check out the video after the break, you'll see two people unsuccessfully attempt a takedown on the monster --
