What action does Spitz take against Buck during a team conflict?

In "The Call of the Wild," Spitz takes aggressive action against Buck by attacking him, which is significant in the context of their rivalry for leadership within the sled dog team. This conflict is rooted in the struggle for dominance, as Buck, new to the wild, begins to assert himself and challenge Spitz’s authority. The attack by Spitz serves as a pivotal moment that showcases the brutal and competitive nature of the environment in which they are living. Through this confrontation, Buck not only faces a physical challenge but also begins his transformation as he learns to navigate the law of the wild. This moment illustrates the themes of survival and the instinctual behaviors that emerge in the harsh realities of nature. The attack ultimately sets off a series of events leading to Buck's assertion of his own strength and capability.