A red fox and bison in the snow - stock photo

A northern red fox walks through the snow past a bison durring the winter in Yellowstone National Park's Hayden Valley. Fox often rely on Yellowstone's Bison inside the park's interior because the bison disturb the subnivean zone with their feeding, making it easier for foxes to capture rodents in the deep snow.A northern red fox walks through the snow past a bison during the winter in Yellowstone National Park's Hayden Valley. Fox often rely on Yellowstone's Bison inside the park's interior because the bison disturb the subnivean zone with their foraging for food, making it easier for foxes to capture rodents in the deep snow.