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  1. Two Bison Bulls Sparring, Yellowstone National Park, Wyoming
  2. Sneffels Range with fall colors, near Ouray, Colorado
  3. Two bighorn sheep rams head butting, Clear Creek County, Colorado
  4. Wild burro jenny biting its foal's ear, Custer State Park, South Dakota
  5. Male Grant's gazelle, Samburu National Reserve, Kenya, Africa
  6. Bosque del Apache National Wildlife Refuge, New Mexico
  7. Two young wild burro playing, Custer State Park, South Dakota, USA
  8. Male greater kudu, Kruger National Park, South Africa
  9. Osprey landing on its nest, Lemhi County, Idaho
  10. Needles near Elephant Hill, Canyonlands National Park, Utah
  11. Sneffels Range with fall colors, near Ouray, Colorado
  12. Red cliffs at sunset, Coconino National Forest, Arizona
  13. Mountain goat (Oreamnos americanus) nanny and kid, Mount Evans, Colorado
  14. Cape Mountain zebra (Equus zebra zebra), Mountain Zebra National Park
  15. North Clear Creek Falls, Rio Grande National Forest, Colorado, USA
  16. Four male Lion, Kruger National Park
  17. Fremont's peppergrass behind a weathered juniper trunk, Arches National Park, Utah
  18. African elephant with large tusks, Ngorongoro Crater, Tanzania, East Africa
  19. American pika among yellow wildflowers, San Juan National Forest, Colorado
  20. White-tailed deer buck, Custer State Park, South Dakota, USA
  21. Guanaco, Torres del Paine National Park, Patagonia, Chile
  22. Pink clouds along the Teton Range at sunset, Grand Teton National Park, Wyoming
  23. Mink in captivity, Sandstone, Minnesota
  24. Claretcup Cactus bloom, Needles District, Canyonlands National Park, Utah
  25. African wild dog, Kruger National Park, South Africa
  26. Black bear, outside Glacier National Park, Montana
  27. Blue wildebeest cow and days-old calf running, Ngorongoro Crater, Tanzania
  28. Red fox kit, Sandstone, Minnesota, USA
  29. Three black-tailed prairie dog, Custer State Park, South Dakota, USA
  30. Nile crocodile swimming, Serengeti National Park, Tanzania, East Africa
  31. Black bear spring cub in captivity, Sandstone, Minnesota, USA
  32. Colorful sandstone layers, Valley Of Fire State Park, Nevada
  33. Young leopard, Kruger National Park, Africa
  34. Bobcat mother with 21 day old kittens, Sandstone, Minnesota
  35. Cheetah lying down while surveying an open plain, Masai Mara National Reserve, Kenya
  36. Snow Leopard in the snow, in captivity, near Bozeman, Montana
  37. Fog mingling with evergreen trees, Yellowstone National Park, Wyoming
  38. Teton Range at Dawn in winter, Grand Teton National Park, Wyoming
  39. Sunrise in the badlands, Theodore Roosevelt National Park, North Dakota
  40. Bare tree reflected in a floodplain, Bosque del Apache, New Mexico
  41. Aspen leaf turning red and orange on a lichen-covered rock, Colorado, USA
  42. Male nyala, Imfolozi Game Reserve, South Africa
  43. Bison calf, Yellowstone National Park, Wyoming, United States of America
  44. Pallid bat (Antrozous pallidus) in flight, near Portal, Arizona
  45. Least chipmunk, San Juan National Forest, Colorado
  46. Formations in Valley of the Gods with two hot air balloons, near Mexican Hat, Utah
  47. Pebbles at St. Mary Lake, Glacier National Park, Montana
  48. Head on shot of lion cub looking at camera, Masai Mara Game Reserve, Kenya