What does Buck's "howl" signify as he embraces the wild?

Buck's "howl" signifies his connection to his wild ancestry as he embraces the wild. Throughout "The Call of the Wild," Buck undergoes a profound transformation, shedding his domestic life and tapping into the primal instincts and heritage of his forebears. The howl represents not just a form of communication but also an acknowledgment of his awakening to the ancient call of nature and his lineage as a wolf. This moment illustrates Buck's deepening relationship with his instincts and his acceptance of the wild life, highlighting the instinctual bond that he shares with his ancestral roots. As he howls, it is a powerful expression of his newfound identity and the freedom that comes from embracing that part of himself.