Boxford, Massachusetts police Lt. James Riter was responding to a call about loose cows when he witnessed a herd high-tailing it for a backyard, followed by screaming. When he ran back there, he found the six cows had chased off the guests and knocked their beer cans over so they could lap up the spillage. He says they even started rooting through the recycling for extra drops. The cows' owner later showed up and herded them home.