A lone wolf surveys a bison herd at Yellowstone National Park
The fourth and last wolf we saw in our summer week at Yellowstone National Park was wandering in a bison herd. We first saw the wolf cross the East Entrance Road from the shoreline of Mary Bay on Yellowstone Lake and then immediately trotinto a herd of bison on the other side of the road. The bulls, cows and young bison did not stampede when the wolf walked among them. They kept grazing and resting, belching and rolling in the dirt. The wolf slowly trotted through the herd of about 40 bison, occasionally stopping or changing direction, and constantly looking around.