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  1. Close up of an ostrich's head at Fossil Rim Wildlife Center, Glen Rose, Texas
  2. A studio portrait of lowbush blueberries
  3. A green parakeet, Psittacara holochlorus strenuus, from a private collection
  4. A critically endangered Eastern black rhino, at the Oklahoma City Zoo
  5. A Stingray, Potamotrygon Motoro, At Piscilago Zoo
  6. Sunset falls on the Salar de Atacama salt flat, Atacama Desert, Chile
  7. A studio portrait of a yellow lab
  8. A federally endangered African leopard, Panthera pardus pardus, at the Houston Zoo
  9. A red eyed tree frog (Agalychnis callidryas) at the Sunset Zoo
  10. Composite of different species of Photo Ark species
  11. A chiloe wigeon, at the Cincinnati Zoo
  12. A caterpillar, Snowberry Clearwing larvae at Spring Creek Prairie, Nebraska
  13. Salmon, Idaho
  14. Rough Earth Snake, Virginia Striatula, At Wildcare In Noble, Oklahoma
  15. A sulpher-crested cockatoo, at the Minnesota Zoo
  16. A male peacock displays his feathers and plumage
  17. An eastern green mamba, Dendroaspis angusticeps, at the Houston Zoo
  18. This capuchin monkey sits perched in a tree, Madidi National Park, Bolivia
  19. A federally threatened grizzly bear, Ursus arctos horribilis
  20. Magnum, Oklahoma
  21. An endangered juvenile Yosemite toad
  22. Whitman County Growers granery and wheat fields, Colfax, Washington
  23. An endangered snow leopard, at the Miller Park Zoo
  24. A group of caimans wait for fish, Pantanal, Brazil
  25. A critically-endangered Sumatran tiger at Zoo Atlanta
  26. Cover of the April 2016 National Geographic Magazine
  27. A thunderstorm moves over the eastern shore of Lake Albert
  28. A red eyed tree frog (Agalychnis callidryas) at the Sunset Zoo
  29. A critically endangered Bactrian camel, at the Lincoln Children's Zoo
  30. An endangered Malayan tiger
  31. An endangered Malayan tiger, Panthera tigris jacksoni
  32. An Indian peafowl, at the Lincoln Children's Zoo
  33. Some of the 100,000 nesting pairs of King penguins in St. Andrews Bay
  34. Sioux Falls, South Dakota. A porcupine, Erethizon dorsatum, at the Great Plains Zoo
  35. A Louisiana black bear, Ursus americanus luteolus, at the Caldwell Zoo
  36. Part of an Indian peafowl, at the Lincoln Children's Zoo
  37. Lowrie Island, Forrester Island National Wildlife Refuge, Alexander Archipelago , Alaska
  38. An endangered Malayan tiger
  39. Black piranha, Serrasalmus rhombeus, at Shark Reef Aquarium
  40. Four buff orpington hens in tall grass
  41. Blue waxbills are a common sight in Gorongosa's dry, bushy grasslands
  42. A green tree python at the Riverside Zoo
  43. A female Alabama beach mouse, Peromyscus polionotus ammobates
  44. A pair of Australian rainbow lorikeets, at the Indianapolis Zoo
  45. A captive eastern screech owl, Megascops asio, at Ryerson Woods
  46. An aye aye, Daubentonia madagascariensis, at Duke Lemur Center
  47. A white oak leaf
  48. J. N. Ding Darling National Wildlife Refuge, Florida