Edited by Alison Loar, and Gretchen Baker, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 2. (c) sarbhloh, some rights reserved (CC BY-NC-ND)
- 3. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 4. (c) Mark Kilner, some rights reserved (CC BY-NC-SA)
- 5. (c) Charles Lam, some rights reserved (CC BY-SA)
- 6. (c) Chuck Roberts, some rights reserved (CC BY-NC-ND)
- 7. (c) Andrew Reding, some rights reserved (CC BY-NC-ND)
- 8. (c) http://www.naturespicsonline.com/, some rights reserved (CC BY-SA)
- 9. (c) matt knoth, some rights reserved (CC BY-NC-ND)
- 10. (c) Maggie.Smith, some rights reserved (CC BY-NC)
- 11. (c) Jerry Downs, some rights reserved (CC BY-ND)
- 12. (c) Jessica Merz, some rights reserved (CC BY)
- 13. (c) Anita Gould, some rights reserved (CC BY-NC), uploaded by Anita Gould
- 14. (c) Anita Gould, some rights reserved (CC BY-NC)
- 15. (c) Kai Schreiber, some rights reserved (CC BY-NC-SA)
- 16. (c) Richard Johnson, some rights reserved (CC BY-NC-SA)
- 17. (c) Erin and Lance Willett, some rights reserved (CC BY-NC-ND)
- 18. (c) Kari Pihlaviita, some rights reserved (CC BY-NC)
- 19. (c) Robin Horn, some rights reserved (CC BY-NC-ND)
- 20. (c) Frank Carey, some rights reserved (CC BY-NC-SA)
- 21. (c) Vitaliy Khustochka, some rights reserved (CC BY-NC)
- 22. (c) Yathin, some rights reserved (CC BY-NC-ND)
- 23. (c) Becky Gregory, some rights reserved (CC BY-ND)
- 24. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 25. (c) Rick Leche, some rights reserved (CC BY-NC-ND)
- 26. (c) Doug Greenberg, some rights reserved (CC BY-NC-ND)
- 27. (c) Sergey Yeliseev, some rights reserved (CC BY-NC-ND)
- 28. (c) Jörg Hempel, some rights reserved (CC BY-SA)
- 29. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
- 30. (c) Joby Joseph, some rights reserved (CC BY-NC-SA)
- 31. (c) Jamie Chavez, some rights reserved (CC BY-NC)
- 32. (c) Blake Matheson, some rights reserved (CC BY-NC)
- 33. (c) Tom Benson, some rights reserved (CC BY-NC-ND)
- 34. (c) realworldracingphotog, some rights reserved (CC BY-NC-ND)
- 35. (c) Kelly Colgan Azar, some rights reserved (CC BY-ND)
- 36. (c) Matt Ewalt, some rights reserved (CC BY-NC-SA)
- 37. (c) Michael Woodruff, some rights reserved (CC BY)
- 38. (c) Lip Kee Yap, some rights reserved (CC BY-SA)
- 39. (c) Dan Pancamo, some rights reserved (CC BY-SA)
- 40. (c) Brian Peterson, some rights reserved (CC BY-NC-ND)
- 41. (c) Arthur Chapman, some rights reserved (CC BY-NC-SA)
- 42. (c) Eric Heupel, some rights reserved (CC BY-NC)
- 43. (c) Dmitry Mozzherin, some rights reserved (CC BY-NC-SA)
- 44. (c) Rick Leche - Photography, some rights reserved (CC BY-NC-ND)
- 45. (c) Minette Layne, some rights reserved (CC BY-NC)
- 46. (c) Gavan Watson, some rights reserved (CC BY-NC-SA)
- 47. (c) Jim Frazier, some rights reserved (CC BY-NC-ND)
- 48. (c) Minette, some rights reserved (CC BY-NC)