Dog mushing is a key part of The Call of the Wild, and was very important to the Klondike Gold Rush. Using either the Internet or print sources, research the use of dogs during the Gold Rush. Find two or three credible sources that seem particularly interesting, and write a brief paragraph summarizing what you found. Your response should be at least 150 words in length, and your sources should be properly cited in accordance with MLA style. View the MLA Style Guide.