How does Buck's behavior change after meeting John Thornton?

In "The Call of the Wild," Buck’s interaction with John Thornton marks a pivotal transformation in his character. After enduring harsh treatment and betrayal from previous owners, Buck finds in Thornton a figure who treats him with kindness and respect. This nurturing relationship allows Buck to cultivate a sense of loyalty and affection that he had previously lost.

Thornton provides Buck with the love and attention that are absent from the other figures in his life, which leads Buck to form a strong bond with him. This attachment not only enhances Buck's sense of security but also encourages him to display behaviors that signify loyalty and devotion. Throughout the subsequent adventures and hardships, Buck demonstrates this newfound loyalty by protecting Thornton and showcasing his abilities, reflecting a deep emotional connection.

The change in Buck’s demeanor is significant, highlighting themes of love, trust, and the impact of positive relationships on one’s behavior. In this way, the answer reveals the depth of transformation Buck undergoes as he reconnects with his instincts and finds companionship in Thornton, standing in contrast to his prior experiences of abuse and neglect.