A black and grey wolf from the Druid pack howling on glacial erratic in Little America Flats Yellowstone National Park February 3, 2004 in Yellowstone, Wyoming.

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A black and grey wolf from the Druid pack howling on glacial erratic in Little America Flats Yellowstone National Park February 3, 2004 in Yellowstone, Wyoming.

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Size: 4000px × 2675px
Location: Yellowstone, Wyoming
Photo credit: © NPS Photo / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: america, apex, black, canis, day, druid, erratic, glacial, grey, horizontal, howling, howls, landscape, lupus, national, natural, nature, nps, outdoors, pack, park, people, predator, rocks, scenic, snow, snowy, states, travel, united, usa, weather, wild, wildlife, winter, wolf, wolves, wyoming, yellowstone