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  1. Brown-Throated Three-Toed Sloth, Panamerican Conservation Association In Gamboa, Panama
  2. White eyed parakeet, Psittacara leucophthalmus leucophthalmus, from a private collection
  3. Fort Worth, Texas. Silkie showgirl chickens, Gallus gallus domesticus
  4. A federally endangered Florida panther, at Tampa's Lowry Park Zoo
  5. A grizzly bear snarling at the Cheyenne Mountain Zoo
  6. Silkie showgirl chickens, Gallus gallus domesticus, at the Fort Worth Zoo
  7. Three of eight pups of captive Mexican gray wolves, Wichita, Kansas
  8. A male elk standing in snowy field near gentle rolling hills
  9. Red Sided Garter Snake, Thamnophis Sirtalis Infernalis, At The Exmoor Zoo
  10. A studio portrait of a domestic house cat
  11. A federally endangered Florida panther, at Tampa's Lowry Park Zoo
  12. Asian Forest Scorpion, Heterometrus Swammerdami, At The Exmoor Zoo
  13. A cluster of rare Harper's beauty flowers, Harperocallis flava
  14. A captive gray wolf licks his nose, Rapid City, South Dakota
  15. Lightning strikes in Wyoming's Red Desert, Adobe Town, Wyoming
  16. A Mount Graham red squirrel, one of the rarest animals in North America
  17. An Andean Porcupine, St. Louis Zoo
  18. A Steller sea lion exchanges a kiss with her pup, Lowrie Island, Forrester Island National Wildlife Refuge, Alaska
  19. Indochinese tiger at Omahas Henry Doorly Zoo
  20. Smooth fronted caiman at the Saint Augustine Alligator Farm Zoological Park
  21. A federally endangered African leopard, Panthera pardus pardus, at the Houston Zoo
  22. Cheyenne Mountain Zoo, Colorado Springs, Colorado
  23. A Mallard duckling, Anas platyrhynchos
  24. A herd of pronghorns graze near gas drilling rigs sunset, Pinedale, Wyoming
  25. Two golden pheasants, Chrysolophus pictus, at Bramble Park Zoo
  26. Clay's hibiscus, Hibiscus clayi, a federally endangered plant
  27. Red Octopus, Octopus Rubescens, At The Aquarium Of The Pacific
  28. A sea otter and pup off of Adak Island, Aleutian Islands, Alaska
  29. Canton, Kansas
  30. Miller Park Zoo, Bloomington, Illinois.
  31. Florida Blue Garter Snake, Thamnophis Sirtalis Sirtalis, At The Exmoor Zoo
  32. Portrait of Benjamin Franklin on the one hundred dollar bill
  33. A critically endangered Bactrian camel, at the Lincoln Children's Zoo
  34. A ball of California blackworms, Lumbriculus variegatus, at Western Kentucky University
  35. South Diamond Gila trout, Oncorhynchus gilae gilae, at Mora National Fish Hatchery
  36. A three-month-old baby chimpanzee, at Tampa's Lowry Park Zoo
  37. The eye and face of a Whites tree frog, Pelodryas caerulea
  38. Beautiful Clouds Formations Hover Over Tranquil Water, A Storm In The Distance, Alaska
  39. Lilian's or Nyasa lovebird, Agapornis lilianae, from a private collection
  40. A male tiger swallowtail butterfly (Papilio glaucas)
  41. A western screech owl at the Denver Zoo, Denver, Colorado
  42. Wild birds prepare to land on a lake in the Nebraska sandhills
  43. A Rio Grande cutthroat trout at Seven Springs Fish Hatchery
  44. An Indian peafowl, at the Lincoln Children's Zoo
  45. Eight-week-old gray wolf, Rapid City, South Dakota
  46. A Luzon Bleeding-heart dove, Gallicolumba luzonica
  47. A sandhill crane, Grus canadensis, preening at the Sutton Avian Research Center
  48. A Federally Endangered Clouded Leopard At The Houston Zoo