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