what disturbing thing do the rgrou of hunters and ralph do immediately after their encounter with the pig? How is Ralph's behavior surprising? What does this behavior foreshadow?

As Ralph faces the challenge of tracking and hunting the beast, physical tasks that are unfamiliar to him as the political leader of the boys, he demonstrates the dangerous appeal of aggressive and impulsive behavior such as Jack's. The hunt excites Ralph..... he even throws a spear, relishing that he was able to hit it.

Golding tracks Ralph's brief sympathy with Jack's mindset to suggest that even the most civilized humans are susceptible to groupthink and the pressures of the Id, which is inclined towards destruction and self-gratification. The chapter begins with Ralph expressing disgust over his appearance, which again indicates his natural disinclination towards savagery. Yet, like Jack, Ralph feels exhilarated during the hunt and begins to understand the primal appeal of killing pigs. It is Jack's decision to continue the hunt in darkness, which Ralph rightly recognizes as ill-informed, that finally reminds Ralph of the essential foolishness of Jack's mindset. By showing Ralph's character as threatened but not subsumed by Jack's will, Golding suggests that the human impulse towards savagery, which is both strong and natural, can nevertheless be overcome by reason and intelligence.