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  1. Mountain lion or cougar (Felis concolor) in snow, near Bozeman, Montana
  2. Bison in snow, Yellowstone National Park, Wyoming
  3. Sunrise over Alpine wildflowers, San Juan National Forest, Colorado
  4. Bison in a snowstorm, Yellowstone National Park, Wyoming
  5. Masai Giraffe mother and young, Serengeti National Park, Tanzania, Africa
  6. Bobcat in the snow, near Bozeman, Montana
  7. Two bison (Bison bison) bulls facing off, Yellowstone National Park, Wyoming
  8. Bison cow and calf, Yellowstone National Park, Wyoming
  9. Mears Peak with snow and yellow aspens in the fall, Colorado, USA
  10. Canadian Lynx in snow in captivity, near Bozeman, Montana
  11. Bison Bull Covered With Frost In The Winter, Yellowstone National Park, Wyoming
  12. Canadian Lynx in snow in captivity, near Bozeman, Montana
  13. Red and orange fall colors in the Wasatch Mountains, Uinta National Forest, Utah
  14. Bobcat in snow, near Bozeman, Montana
  15. Gray wolf drinking in the fog, reflected in the water, Sandstone, Minnesota
  16. Sneffels Range with aspens in fall colors, near Ouray, Colorado
  17. Mears Peak with snow and yellow aspens in the fall, Colorado, USA
  18. Bull elk bugling in the snow, Jasper National Park, Alberta, Canada
  19. Red Fox in the snow, Prospect Park, Wheatridge, Colorado
  20. Sneffels Range with fall colors, near Ouray, Colorado
  21. Guadalupe Peak and El Capitan at sunset, Guadalupe Mountains National Park, Texas
  22. Aspen grove in early fall, White River National Forest, Colorado
  23. Captive Barn Owl In Barn Window, Boulder County, Colorado
  24. Guadalupe Peak and El Capitan at sunset, Guadalupe Mountains National Park, Texas
  25. Lane through fall aspens, Ophir Pass, Uncompahgre National Forest, Colorado
  26. Young black bear a year and a half old, Bozeman, Montana
  27. Two bull elk sparring during the rut, Jasper National Park, Alberta, Canada
  28. Whitetail deer fawn among oxeye daisy, in captivity, Sandstone, Minnesota
  29. Male Gambel's Quail scratching for food, Henderson, Nevada
  30. Wilson Peak at dawn, Uncompahgre National Forest, Colorado
  31. Mount Sneffels with snow in the fall, Uncompahgre National Forest, Colorado, USA
  32. Black bear cub among oxeye daisy, in captivity, Sandstone, Minnesota
  33. Emerald Pools Trail, Zion National Park, Utah
  34. Black bear sow nursing a spring cub, Yellowstone National Park, Wyoming
  35. Aspen trunks among yellow leaves, Colorado, USA
  36. Blue columbine, Weston Pass, Pike and San Isabel National Forest, Colorado
  37. Orange clouds at dawn above Longs Peak, Rocky Mountain National Park, Colorado
  38. Sunset over The Sawtooth Mountains, Sawtooth National Recreation Area, Idaho
  39. Bison reflected in a pond, Yellowstone National Park, Wyoming
  40. Cascade in The Narrows of the Virgin River, Zion National Park, Utah
  41. Grinnell Point and Swiftcurrent Creek, Glacier National Park, Montana
  42. Baobab at sunrise, Ruaha National Park, Tanzania
  43. Red-billed oxpecker on a Cape buffalo, Kruger National Park, South Africa
  44. Alpine meadow with orange sneezeweed and wildflowers, San Juan National Forest, Colorado
  45. Male greater kudu, Mountain Zebra National Park, South Africa
  46. Aspen grove with early fall colors, Maroon Lake, Colorado
  47. African Elephant Baby And Mother, Addo Elephant National Park, South Africa
  48. Aspen trunks among yellow leaves, Colorado, USA