ght with other dog in order to stay alive ,finally ,Buck became very strong and made himself the leader of the whole dog team .life was always going on like this for o while .Once during a journey ,Buck was nearly dead ,then he met his master Jhon Thorton .Thorton was a perfect person who came to Buck ‘s rescue and Buck deeply loved him forever .But one day ,Thorton was killed by Indians ,Buck lost his lover and he became nothing then .Finally ,Buck responded the call of the wild and became a wolf ,lived an early wild life as his ancestors .
　　
　　From loyal dog to cruel wolf ,there were several important things in Buck ‘ life .
　　
　　The law of club given by the man of red sweater
　　
　　Buck just entered the Northen society ,he knew nothing about the world ,he behaved on his nature completely ,the man of red sweater gave him a club and let him know obeydience ,Buck learned this lesson for his whole life .
　　
　　Buck was very angry after his terrible experience ,he