Eight-thousand feet above sea level, in the treacherous pass in the Alps between Italy and Switzerland, the monks of the hospice of St. Bernard have, since the 11th century, kept dogs to help them rescue travelers lost in the snow. In time, these dogs became a breed unto themselves, named for the hospice. They are responsible for helping over 2,000 travelers who might otherwise have frozen to death. With great modesty, Barry tells not just about his...