Tourists scrambled over a fence to escape a wolf enclosure in northern Idaho after two wolves they had come to see with no barriers separating them chased down and killed a deer that had wandered in through an open gate. The four visitors from Charlotte, N.C., were in the 5-acre "picture pen" at Wolf People along with a 5-year-old female wolf, a 1-year-old male wolf, and two 12-week-old pups. Visitors pay to enter the enclosure with a wolf handler so they can have unobstructed views of the wolves and take photos at close range. But a deer ran by the...