here at philipsburg manor, shepherd gene sheninger is showing off his loyal shepherding dogs to the crowd. >> [ whistles ] >> but what exactly is sheepherding -- or a shepherd, for that matter? >> well, sheepherding is attending to sheep. shepherds are responsible for taking care of their sheep. so it means warming them, trimming their feet, inoculating them -- all of those things. i was in the corporate world, and i ran a couple of companies, so i have left the high-tech world to go to no-tech. >> so, what are the dogs for? >> well, i have two choices. i could go running out 600 yards myself and bring the sheep back, or i could send the dog out, and my preference is -- being a lazy man -- i'd rather whistle while they work. >> speaking of whistling, it's actually a pretty big part of sheepherding. the shepherd uses whistles to tell the dog what to do. >> every dog has its own set of whistles -- a different tune and a different pitch for each one of the commands. for example, the clockwise whistle sounds like the bobwhite quail... [ whistles ] and if i want them to go the other way, count