Answer:
In chapter 11 of Lord of the Flies, the boys in Jack's group are described as being wild and savage. They have painted their faces with clay and charcoal, and they have let their hair and nails grow long. They are covered in dirt and have a fierce, animalistic look in their eyes. They are also described as being very loud and boisterous, with a strong desire to hunt and kill. They have abandoned the rules and structure of their previous society and are now living in a violent, primal state.
It's hard to predict exactly how the book will end, but it seems that the situation on the island is rapidly deteriorating. The boys have split into two distinct groups, with Ralph and Piggy's group representing civilization and order, and Jack and his group representing savagery and chaos. The two groups are in conflict, and it seems that violence is inevitable. It's possible that the book will end with the rescue of the boys, but it's also possible that it will end tragically with the deaths of some or all of the characters.