In Jack London's novel The Call of the Wild, the main character, Buck, has developed from a house dog to a sled dog. Buck, being forced to adapt in order to survive, has made him become the leader of the pack. When Buck was being attacked by the man in the red sweater, "He saw, once for all, that he stood no chance against a man with a club. He learned the lesson, and in all his afterlife he never forgot it" (11). This shows that eventually Buck realized that he had to learn to respect the club. Also, Buck learned that he is not able to beat everyone, he must accept defeat sometimes. And once he would respect the club, the club wouldn't hurt him. With Buck pulling the sled every single day, "his muscles became as hard as iron, and he grew callous to all ordinary pain" (25). Buck is developing and is becoming stronger to pull the sled. Also, the pain in Buck's feet have disappeared since he is so use to having the same monotonous running every day. Later in the book, Buck was able to pull a 1000 pound sled. This shows that Buck has truly developed into a sled dog, because a house dog would never be able to achieve that. Also, being able to pull a 1000 pound sled means that he has grown stronger from all the running that he has done over the last few months. With him getting stronger and learning to respect the club, Buck has truly turned into an incredible sled dog.