ged for his master .Then,Buck returned to the empty ,ruined camp .He found Thorton in the muddy pool ,there was a great emptiness in him that he never had before .
　　
　　Thorton was dead already .So ,there was nothing for Buck to leave and miss ,he was lonely again .At the same time ,Buck felt the call of the wild that striked him again and again .So joining in his old brothers was a good choice for Buck .
　　
　　The fight with the leading moose
　　
　　Buck lived alone and without help ,using his strength and power surviving in a hard and unfriendly environment where only the strong survived .Because of this ,Buck was proud of himself .So ,his longing for blood became stronger than ever ,he was a killer ,a thing that hunted other animals ,living on the things that lived .But Buck was not satisfied ,the animal he killed before were small and weak ,he wanted to challenged himself ,he needed a large strong one ,so the leading moose became his prey .During the battle with the