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  1. Gray wolf at the International Wolf Center, Ely, Minnesota
  2. A mountain goat descends a sheer rock wall to lick exposed salt
  3. A tawny frogmouth owl, Podargus strigoides, at the Fort Worth Zoo
  4. A bison, on a ranch near Valentine, Nebraska
  5. A common raven, Corvus corax principalis, at the Los Angeles Zoo
  6. A non-irrigated field of corn near Bennet, Nebraska
  7. A snowy egret, at the Lincoln Children's Zoo
  8. Composite of 110 different species of ducks and geese
  9. Portrait of a young pig in a snow dusted animal pen
  10. A butte often painted by Georgia OKeeffe on her Ghost Ranch
  11. Monarch butterflies, Danaus plexippus, in the Sierra Chincua mountains
  12. A silhouette of a herd of bison
  13. Wildflowers on coastal prairie, Eagle Lake, Texas
  14. Brown cockroach, Periplaneta brunnea, at Western Kentucky University
  15. Boston night aerial with time exposure car lights on Central Artery
  16. A red fox stands alert in short grasses
  17. An oil rig silhouetted at sunset
  18. A black bear perches on a rock watching for fish in Clayoquot Sound
  19. Monarch butterflies cover every inch of a tree in Sierra Chincua
  20. Leadore, Idaho
  21. Wild American bison roam on a game preserve in Kansas
  22. A monarch butterfly at the Lincoln Children's Zoo
  23. A silhouette of a herd of bison
  24. An oil rig pumps oil from the Montana ground
  25. Close up of an African eagle ow, Animal Kingdom, Orlando, Florida
  26. A green parakeet, Psittacara holochlorus strenuus, from a private collection
  27. A red barn on a homestead farm in Nebraska
  28. A clouded leopard, Neofelis nebulosa
  29. Parakeets or budgies
  30. The sun sets on the Nebraska Sandhills
  31. Sandhill cranes silhouetted against a twilight sky, Nebraska
  32. A federally threatened koala with her offspring, one of which is adopted
  33. A country road in Otoe county, Nebraska
  34. Platte River, Nebraska
  35. A silhouette of a herd of bison
  36. Lightning fills the night sky near Walton
  37. Three wild burros standing in sagebrush
  38. A yellow bellied marmot, Marmota flaviventris, from a private collection
  39. A captive grey wolf, Canis lupus, in the snow
  40. A lesser short-nosed fruit bat, at the Lubee Bat Conservancy
  41. The eye and face of a veiled chameleon, Chamaeleo calyptratus
  42. Misty view of a gray wolf sitting near a tree, Yellowstone National Park, Wyoming
  43. White tailed hawk, Geranoaetus albicaudatus, at the National Aviary of Colombia
  44. A roseate spoonbill, Sabine National Wildlife Refuge, Florida
  45. The paws of a grizzly bear, Ursus arctos horribilis
  46. A three-month-old baby chimpanzee
  47. A portrait of a bison on a ranch
  48. Green-cheeked conure, Pyrrhura molinae sordida