Edited by Alex Lamoreaux, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Jim Johnson, some rights reserved (CC BY-NC-ND), uploaded by Jim Johnson
- 2. (c) Paul G. Johnson, some rights reserved (CC BY-NC-SA), uploaded by Paul G. Johnson
- 3. (c) Rick C. West, some rights reserved (CC BY-NC), uploaded by Rick C. West
- 4. (c) pawprints, some rights reserved (CC BY-NC)
- 5. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
- 6. (c) guyincognito, some rights reserved (CC BY-NC), uploaded by guyincognito
- 7. (c) Tom Benson, some rights reserved (CC BY-NC-ND)
- 8. (c) Chris Wood, some rights reserved (CC BY-NC-ND), uploaded by Chris Wood
- 9. (c) David Hofmann, some rights reserved (CC BY-NC-ND)
- 10. (c) Royal Tyler, some rights reserved (CC BY-NC-SA), uploaded by Royal Tyler
- 11. no rights reserved, uploaded by Robb Hannawacker
- 12. (c) randomtruth, some rights reserved (CC BY-NC-SA)
- 13. (c) kaseyfoley, some rights reserved (CC BY-NC), uploaded by kaseyfoley
- 14. (c) Bill Bouton, some rights reserved (CC BY-NC)
- 15. (c) dickwood, some rights reserved (CC BY-NC), uploaded by dickwood
- 16. (c) Cameron Eckert, some rights reserved (CC BY-NC), uploaded by Cameron Eckert
- 17. (c) Will Richardson, some rights reserved (CC BY-NC), uploaded by Will Richardson
- 18. (c) Rose Ludwig, some rights reserved (CC BY-NC), uploaded by Rose Ludwig
- 19. (c) Gilles San Martin, some rights reserved (CC BY-SA), uploaded by Gilles San Martin
- 20. no rights reserved, uploaded by Anna N Chapman
- 21. (c) Bill Bouton, some rights reserved (CC BY-SA)
- 22. (c) Aleta Rodriguez, some rights reserved (CC BY-NC-ND)
- 23. (c) avocat, some rights reserved (CC BY-NC), uploaded by avocat
- 24. (c) Gordon Karre, some rights reserved (CC BY-NC), uploaded by Gordon Karre
- 25. (c) roy pilcher, some rights reserved (CC BY-NC), uploaded by roy pilcher
- 26. (c) Zee Mazzacano, some rights reserved (CC BY-NC), uploaded by Zee Mazzacano
- 27. (c) Leslie Flint, some rights reserved (CC BY-NC), uploaded by Leslie Flint
- 28. (c) Bill Bouton, some rights reserved (CC BY-NC-ND)
- 29. (c) larryusa, some rights reserved (CC BY-NC), uploaded by larryusa
- 30. (c) Damon Tighe, some rights reserved (CC BY-NC), uploaded by Damon Tighe
- 31. (c) fam-esquivel, some rights reserved (CC BY-NC)
- 32. (c) johnvillella, some rights reserved (CC BY-NC-SA)
- 33. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 34. (c) Ken Schneider, some rights reserved (CC BY-NC), uploaded by Ken Schneider
- 35. (c) Liam O'Brien, some rights reserved (CC BY-NC), uploaded by Liam O'Brien
- 36. (c) Robb Hannawacker, some rights reserved (CC BY-NC-SA)
- 37. (c) James Bailey, some rights reserved (CC BY-NC), uploaded by James Bailey
- 38. (c) Koji Shiraiwa, some rights reserved (CC BY), uploaded by Koji Shiraiwa
- 39. (c) Mike Hansen, some rights reserved (CC BY-NC), uploaded by Mike Hansen
- 40. (c) Anne Toal, some rights reserved (CC BY)
- 41. (c) Ale Türkmen, some rights reserved (CC BY-NC-SA), uploaded by Ale Türkmen
- 42. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 43. (c) Eran Finkle, some rights reserved (CC BY)
- 44. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 45. (c) Oregon Department of Agriculture, some rights reserved (CC BY-NC-ND)
- 46. (c) molanic, some rights reserved (CC BY-NC), uploaded by molanic
- 47. (c) Jason Headley, some rights reserved (CC BY-NC), uploaded by Jason Headley
- 48. (c) John Wright, some rights reserved (CC BY-NC-ND)
- 49. (c) Diana-Terry Hibbitts, some rights reserved (CC BY-NC), uploaded by Diana-Terry Hibbitts
- 50. (c) Robert, some rights reserved (CC BY-NC)
- 51. (c) J. N. Stuart, some rights reserved (CC BY-NC-ND)