Dog in Chinese mythology resemblance to the real animal, which, however, plays a big part in Chinese folklore."(Eberhard, 2003: 164) The reasons for referencing "guardian lions" as "dogs" in Western cultures may be obscure, however the phenomenon is well known. Despite any fantastic myths from China about dogs, real dogs have been familiar throughout China since prehistorical times (unlike certain exotic animals, such as lions or other creatures, whose real attributes may often only have been known indirectly). Dogs also feature in various historical and legendary accounts or stories, found in the extensive literary records of China, although in some cases the lines between
A Town Called Mercy called the Gunslinger. However, the Gunslinger is a product of experiments by Jex to win a civil war on his planet, and the Doctor is unsure of what is the right thing to do. Showrunner Steven Moffat pitched the Wild West theme to Whithouse when thinking of ways to give each episode a distinct theme. Whithouse further developed the theme, including classic Western tropes and a sympathetic villain. "A Town Called Mercy" and the previous episode "Dinosaurs on a Spaceship" were the first to enter production for the seventh series. Much of the episode was filmed in March 2012 in