Reptiles Canada - How can you tell if you have a bull snake, pine snake, or gopher snake? With eighteen different species/sub-species, and hybrids as well, it can be very difficult...
Reptile Forums UK - Great pictures of Sonny, the albino gopher snake, and Terrible Tex, the bull snake.@ Reptile Forums UK
Kingsnake.com - An impressive array of gopher and bull snakes take some great outdoor photos to show off their lovely colors.
Kingsnake.com - A striking photo comparison of a normal sized bull snake compared to a giant bull snake coming in at 7 feet long and 4280 grams!
Kingsnake.com - Jason Nelson of Envy Reptiles shows off an amazing albino red bull snake, along with its red sibling.
Captive Bred Reptile Forums UK - Photos of some nice looking Pituophis snakes.