A traditional Danish pork roast, common for Christmas dinner in Denmark. Pork finds its way into most Danish meals. SNSK2010/via flickr hide caption

itoggle caption SNSK2010/via flickr

Berkshire pigs on Happy Hula Farm, a member of the Eden Farms collective. Amy Mayer/Iowa Public Radio hide caption

itoggle caption Amy Mayer/Iowa Public Radio

The antibiotic-free pigs roam freely on Niman Ranch in Iowa. Sarah Willis/courtesy Niman Ranch hide caption

itoggle caption Sarah Willis/courtesy Niman Ranch