What major changes Buck go through in the book and what causes these changes?Give direct example from the text page number .

Buck is part St. Bernard, part Scotch shepherd. At the beginning of the story, Buck is a domesticated, but atypical dog who lives in the home of Judge Miller in California. After being kidnapped and taken to Alaska to become a sled-dog, Buck's wild nature is reawakened, and he slowly returns to the ways of his ancestors.Bug transitions from a pampered dog in California to a hardened survivor and leader in the Northen wilds.