Freighting refers to the hauling of cargo, historically, using a dog team to mush goods cross-country. During the North American gold rushes, such as the Klondike Gold Rush, dogs were valuable draft animals, going where horses couldn't and withstanding harsher weather. Dog teams were commonly used for transportation, and in Canada and Alaska were used to deliver the mail during the winter. Large teams of sturdy dogs were required to haul the heavy loads. With the advent of air mail in the 1920s,… (More on Freighting)