While I was interviewing Oliver Nagle, right, and his father, Pat Nagle, left, about their livestock management practices in the Burren region of County Clare, Ireland, an emergency in the barn put a stop to the conversation. A cow was having problems giving birth. A vet arrived - her name was Geraldine van Leeuwen - and the two men joined her in the birth stall. They allowed me to photographs the scene. These photos record what transpired. WARNING: These are not for the squeamish!