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  1. Black piranha, Serrasalmus rhombeus, at Shark Reef Aquarium
  2. A female bison, at the Oklahoma City Zoo
  3. A pit bull mix
  4. Cowboys On Horseback Silhouetted Against The Setting Sun
  5. A rare Eastern indigo snake, Drymarchon corais couperi
  6. Gray wolf at the Rose Creek area of Yellowstone National Park, Wyoming
  7. A studio portrait of General Boots, a mixed breed cat
  8. Animal Kingdom, Orlando, Florida
  9. A tokay gecko, the Sunset Zoo, Manhattan, Kansas, United States of America
  10. Cope's gray tree frog, hiding in a peony bush near Cross Lake, Minnesota
  11. An African Pygmy Hedgehog, Atelerix Albiventris, At Sedgwick County Zoo
  12. Critically endangered plowshare tortoises at Zoo Atlanta
  13. A green cheeked parakeet, Pyrrhura molinae restricta, from a private collection
  14. West African black-crowned cranes
  15. A portrait of a bison on a ranch
  16. An African spurred tortoise, Geochelone sulcata, at the Denver zoo
  17. An attack submarine cruises into port at Groton, Connecticut
  18. Barred owl, Strix varia, from Florida Wildlife Care
  19. A three-month-old baby chimpanzee, at Tampa's Lowry Park Zoo
  20. A dragonfly collected from Mount Gorongosa
  21. A Male Desert Bighorn Sheep At The Arizona Sonora Desert Museum
  22. Black-faced spider monkey, Madidi National Park, Bolivia
  23. Close view of a gorilla face
  24. Studio portrait of a cat named Amadeus Wolfgang Meowzart
  25. Indochinese tiger at Omahas Henry Doorly Zoo
  26. A Mount Graham red squirrel, one of the rarest animals in North America
  27. A male tiger swallowtail butterfly (Papilio glaucas)
  28. Atlantic Mudskipper, Periophthalmus Barbarus, At The Aquarium Of The Pacific
  29. Spider beetles, Gibbium aequinoctiale, at Western Kentucky University
  30. An overpass for wildlife spans the Trans Canada Highway in Banff, Alberta, Canada
  31. A green parakeet, Psittacara holochlorus strenuus, from a private collection
  32. A grey crowned crane with a pair of vulnerable West African black-crowned cranes
  33. A large group of parakeets gather at a bird feeder at the New Orleans Aquarium
  34. Gambel's quail, Callipepla gambelii, at the Albuquerque BioPark
  35. A great horned owl at Northwest Trek Wildlife Park in Eatonville, Washington
  36. A Critically Endangered Javan Leopard At Taman Safari
  37. An African lion (Panthera leo krugeri) from the Sedgwick County Zoo
  38. A rare Northern spotted owl, Strix occidentalis caurina
  39. A great egret, Ardea alba
  40. Missouri
  41. An Asian flower beetle, Agestrata orichalca
  42. Cliff chipmunk, Tamias dorsalis, at Southwest Wildlife Conservation Center
  43. Capitol dome with moon, Hartford, Connecticut
  44. Ringnecked pheasant, Phasianus colchicus, in the Nebraska sandhills
  45. Red Sided Garter Snake, Thamnophis Sirtalis Infernalis, At The Exmoor Zoo
  46. A snowy egret, at the Lincoln Children's Zoo
  47. A critically-endangered Sumatran tiger cub, Panthera tigris sumatrae, at Atlanta Zoo
  48. Two of eight pups with parent of captive Mexican gray wolves, Wichita, Kansas