Dairy cows pampered on farm

The traditional techniques for keeping cows happy aren't complicated — feed them well, keep the temperature comfortable and give them room to move around. But some dairy farmers are turning to a new array of creative options intended to keep cows as mellow — and productive — as possible. Some farmers have installed waterbeds for their cows to rest on, while others play classical music. And some hire animal chiropractors to give older cows a tuneup and correct minor issues in calves, all part of the effort to ensure maximum milk output.