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