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  1. Tree Frog In Costa Rica
  2. Tree Frog In Costa Rica
  3. Red-Eyed Tree Frog On Stem
  4. Blue And Yellow Triggerfish Eye
  5. Close-Up Of Dog
  6. Cheetah, Masai Mara Game Reserve, Kenya
  7. Mandarinfish
  8. Black Rhinoceros
  9. Busy Bees
  10. Bull Frog
  11. A yellow-crowned night heron, Nyctanassa violacea
  12. The wing of a male Florida grasshopper sparrow
  13. A yellow-billed stork, at The Living Desert in Palm Desert, California
  14. A spectacled caiman, at the Omaha Henry Doorly Zoo
  15. A Northern white-faced owl, at the Cincinnati Zoo
  16. African bullfrog, at the Omaha Zoo
  17. A chocolate chip sea star, at the Indianapolis Zoo
  18. Blue waxbills are a common sight in Gorongosa's dry, bushy grasslands
  19. An endangered Sumatran tiger, at the Miller Park Zoo
  20. Close-Up Of A Bison Bull With Leaves Tangled In His Ear, Yellowstone National Park
  21. Russian Blue cat
  22. Moose (alces alces) face covered in snow, Yukon, Canada
  23. In The Minds Eye
  24. Braided Mane Sepia II
  25. Close-up of a horse's eye, Lapland, Finland
  26. Elephant's eye. Sonepur Mela, India
  27. Close-up of a horse's eye, Lapland, Finland
  28. A grizzly bear snarling at the Cheyenne Mountain Zoo
  29. A great horned owl at Northwest Trek Wildlife Park in Eatonville, Washington
  30. Monarch Butterfly In Rain On Sunflower, Nova Scotia, Canada
  31. Watchful
  32. Cape Eagle Owl Eyes
  33. A pied crow, Corvus albus, at Zoo Atlanta
  34. A West Usambara two-horned chameleon, at the Houston Zoo
  35. A federally endangered African leopard, Panthera pardus pardus, at the Houston Zoo
  36. Texas horned lizard, Phrynosoma cornutum, at the Fort Worth Zoo
  37. A Texas horned lizard, Phrynosoma cornutum, at the Fort Worth Zoo
  38. A tawny frogmouth owl, Podargus strigoides, at the Fort Worth Zoo
  39. Studio portrait of a cat named Amadeus Wolfgang Meowzart
  40. An endangered Malayan tiger, Panthera tigris jacksoni
  41. An endangered Malayan tiger, Panthera tigris jacksoni
  42. A rare Northern spotted owl, Strix occidentalis caurina
  43. An Asian flower beetle, Agestrata orichalca
  44. A rare Northern spotted owl, Strix occidentalis caurina
  45. A harpy eagle, Harpia harpyja, at the Los Angeles Zoo
  46. Swallowtail butterfly wing scales, China
  47. Oldworld Swallowtail caterpillar, Switzerland
  48. Oldworld Swallowtail butterfly wing detail, Switzerland