I saw this on Modern Marvels, History channel. everything is automated even the cows. I know how ridiculous the last part of that sounds, but humans do not interfear with the livestock at all. The cows know when to go to the coral and wait in line to be milked. According to the show, they cows like it. After the cows are done, they get to go outside into the pasture and play. The show said it was the robots involved had the efficiency of a Nascar Pit Crew. Really interesting.