What did Buck's experience in the wild teach him about survival?

Buck's journey in the wild reveals critical lessons about survival, particularly the importance of strength and cunning. Throughout the narrative, he faces numerous challenges that require not just physical power but also intelligence and adaptability. Buck learns that to thrive in the harsh environment of the Yukon, he must tap into both his innate instincts and learned experiences.

His encounters with other animals, rival dogs, and the natural elements highlight that brute strength alone is not enough. For instance, he must outmaneuver opponents and strategize to secure food and protect himself. This dual necessity for strength and cunning aligns with the survival of the fittest theme prevalent in the story. As Buck embraces his primal instincts, he evolves into a powerful leader, illustrating that survival is a complex interplay of physical ability and cleverness.