There’s no doubt. The greyish coat, the effortless trot over soft snow, the way it stops, stalks, then strikes, picking off a marmot and ending it with one bite: it’s a wolf. That’s what I’m watching at nearly 5000 metres of altitude here in the Indian-administered part of Ladakh, a region in the Himalayas. Life in the heights is harsh, but these wolves are among a cast of mammals making a living,...