'We live in a world populated by dog lovers, where many of us regard them as members of the family. We are fascinated by them: either anthropomorphising our pets or obsessing about the ways they differ from us. And mountains - theatres of risk, drama and heroism - provide the perfect stage for us to enact our canine fascination in all its pathos and poetry. In short, the hills bring into focus just how much we love being with dogs.' Dogs...