With each step closer to the front edge of the field one more cow looks up in my direction. I walk halfway down the fence that faces a plot of empty land next to the pasture. The cows will slowly walk with stride to meet me at the seventh post. Some take longer to reach me while others wait first in line to smell what new treat I brought them that day. When the final few come sliding into the line of bovines looking at me, I sing them a soft tune before handing them some fruit.