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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 snowy egret, at the Lincoln Children's Zoo
  6. Wildflowers on coastal prairie, Eagle Lake, Texas
  7. Composite of 110 different species of ducks and geese
  8. Brown cockroach, Periplaneta brunnea, at Western Kentucky University
  9. A butte often painted by Georgia OKeeffe on her Ghost Ranch
  10. Boston night aerial with time exposure car lights on Central Artery
  11. Portrait of a young pig in a snow dusted animal pen
  12. A common raven, Corvus corax principalis, at the Los Angeles Zoo
  13. A silhouette of a herd of bison
  14. Monarch butterflies, Danaus plexippus, in the Sierra Chincua mountains
  15. A non-irrigated field of corn near Bennet, Nebraska
  16. An oil rig silhouetted at sunset
  17. A clouded leopard, Neofelis nebulosa
  18. Leadore, Idaho
  19. Close up of an African eagle ow, Animal Kingdom, Orlando, Florida
  20. A red barn on a homestead farm in Nebraska
  21. Lightning fills the night sky near Walton
  22. A captive grey wolf, Canis lupus, in the snow
  23. A green parakeet, Psittacara holochlorus strenuus, from a private collection
  24. A monarch butterfly at the Lincoln Children's Zoo
  25. The eye and face of a veiled chameleon, Chamaeleo calyptratus
  26. Three wild burros standing in sagebrush
  27. The sun sets on the Nebraska Sandhills
  28. Sandhill cranes silhouetted against a twilight sky, Nebraska
  29. A silhouette of a herd of bison
  30. A black bear perches on a rock watching for fish in Clayoquot Sound
  31. Misty view of a gray wolf sitting near a tree, Yellowstone National Park, Wyoming
  32. A three-month-old baby chimpanzee
  33. The paws of a grizzly bear, Ursus arctos horribilis
  34. A red fox stands alert in short grasses
  35. Endangered African grey parrots, Psittacus erithacus erithacus, at Parrots in Paradise
  36. A mated pair of red and green macaws
  37. A federally threatened koala with her offspring, one of which is adopted
  38. Monarch butterflies cover every inch of a tree in Sierra Chincua
  39. Giant Katydid, Stilpnochlora Couloniana, At The Budapest Zoo
  40. An oil rig pumps oil from the Montana ground
  41. A tokay gecko, the Sunset Zoo, Manhattan, Kansas, United States of America
  42. A close view of the head of a cockatiel, Nymphicus hollandicus
  43. A silhouette of a herd of bison
  44. A group of American flamingos, Phoenicopterus ruber, at Lincoln Children's Zoo
  45. A silhouette of a herd of bison
  46. Wild American bison roam on a game preserve in Kansas
  47. A country road in Otoe county, Nebraska
  48. An African Pygmy Hedgehog, Atelerix Albiventris, At Sedgwick County Zoo