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  1. Gray wolf at the International Wolf Center, Ely, Minnesota
  2. A tawny frogmouth owl, Podargus strigoides, at the Fort Worth Zoo
  3. A mountain goat descends a sheer rock wall to lick exposed salt
  4. A bison, on a ranch near Valentine, Nebraska
  5. Wildflowers on coastal prairie, Eagle Lake, Texas
  6. A snowy egret, at the Lincoln Children's Zoo
  7. A silhouette of a herd of bison
  8. Boston night aerial with time exposure car lights on Central Artery
  9. Leadore, Idaho
  10. Close up of an African eagle ow, Animal Kingdom, Orlando, Florida
  11. A three-month-old baby chimpanzee
  12. A butte often painted by Georgia OKeeffe on her Ghost Ranch
  13. Composite of 110 different species of ducks and geese
  14. A clouded leopard, Neofelis nebulosa
  15. A red barn on a homestead farm in Nebraska
  16. An oil rig silhouetted at sunset
  17. Brown cockroach, Periplaneta brunnea, at Western Kentucky University
  18. Lightning fills the night sky near Walton
  19. A common raven, Corvus corax principalis, at the Los Angeles Zoo
  20. A monarch butterfly at the Lincoln Children's Zoo
  21. A captive grey wolf, Canis lupus, in the snow
  22. A mated pair of red and green macaws
  23. Portrait of a young pig in a snow dusted animal pen
  24. A non-irrigated field of corn near Bennet, Nebraska
  25. Endangered African grey parrots, Psittacus erithacus erithacus, at Parrots in Paradise
  26. An African Pygmy Hedgehog, Atelerix Albiventris, At Sedgwick County Zoo
  27. A red fox stands alert in short grasses
  28. A silhouette of a herd of bison
  29. Sandhill cranes silhouetted against a twilight sky, Nebraska
  30. Three wild burros standing in sagebrush
  31. A federally threatened koala with her offspring, one of which is adopted
  32. Wild American bison roam on a game preserve in Kansas
  33. The sun sets on the Nebraska Sandhills
  34. Monarch butterflies, Danaus plexippus, in the Sierra Chincua mountains
  35. A gray wolf, Canis lupus, sitting in the midst of a snowy landscape
  36. A black bear perches on a rock watching for fish in Clayoquot Sound
  37. Misty view of a gray wolf sitting near a tree, Yellowstone National Park, Wyoming
  38. South Dakotas famed Mount Rushmore National Monument
  39. Monarch butterflies cover every inch of a tree in Sierra Chincua
  40. The eye and face of a veiled chameleon, Chamaeleo calyptratus
  41. A green parakeet, Psittacara holochlorus strenuus, from a private collection
  42. A large adult grizzly bear faces the camera
  43. A silhouette of a herd of bison
  44. An endangered Malayan tiger, Panthera tigris jacksoni
  45. Giant Katydid, Stilpnochlora Couloniana, At The Budapest Zoo
  46. Koi fish at the Taronga Zoo
  47. A country road in Otoe county, Nebraska
  48. A federally endangered black jaguar, Panthera onca, at the Henry Doorly Zoo