How does buck demonstrate to his master his intelligence and his abiltiy?

Buck demonstrates his intelligence and ability by quickly adapting to his new environment and learning the skills necessary for survival. He observes the behaviors of both humans and other dogs, allowing him to navigate challenges effectively. Additionally, Buck showcases his problem-solving skills, such as when he learns to pull a sled efficiently and understand commands, earning him respect from his master and peers. Through these actions, Buck proves that he is not just a strong dog but also a clever and resourceful one.