Call of the Wild (1935)

This early adaptation of the classic Jack London novel follows Jack Thornton (Clark Gable) as he travels across Alaska during the Klondike Gold Rush. When he finds another Yukon-bound man, who treats his sled dogs cruelly, Jack purchases a dog named Buck, who leads the way toward the gold. But Jack reconsiders his journey when he finds Claire Blake (Loretta Young), a woman recently abandoned by her husband in the Alaskan wilderness, and the couple develops a romance.