A horse walks alone on a field at N.C. State University’s College of Veterinary Medicine Tuesday, February 12, 2013. It is one of 25 horses belonging to the college’s teaching animal unit, which provides a real farm setting for the training of veterinary students. The unit has various livestock animals, including horse, dairy cow, beef cattle, goat, lama and swine. TAKAAKI IWABU — tiwabu@newsobserver.com Buy Photo