How does Buck's character change throughout the book?

Buck's character undergoes a significant transformation throughout "The Call of the Wild." Initially, he is a domesticated dog, living a comfortable life as a pet in the home of Judge Miller. As he is thrust into the harsh realities of the wilderness after being sold into a life of hard labor as a sled dog, Buck begins to reconnect with his primal instincts and the call of his ancestry.

Throughout the narrative, Buck faces numerous challenges that force him to adapt and grow stronger, both physically and mentally. He learns to navigate the brutal environment, competes with other dogs, and ultimately embraces his wild heritage. This evolution signifies a departure from his previous life, where he relied on human care and comfort, towards becoming a powerful and independent creature capable of surviving in the wild.

This journey reflects themes of survival, adaptability, and the intrinsic pull of nature, making Buck's transformation from a domesticated pet to a fierce, self-reliant creature a central element of the story.