,Thorton also knew dogs and knew them very well .For Buck ,Jhon Thorton absolutely was a good master .In Buck’s inner heart ,Thorton was the most important person to him ,he gave his true love to Thorton and he would try his biggest effort to protect Thorton from harm even if it cost his life .
　　
　　Thorton to Buck’s love ,Buck had never got it from other masters ,even though Judge Miller .Between Buck and Thorton ,there was a highly and specially agreement ,they could communicate with each other by a simple eye contact , Buck could get message from looking Thorton’s eyes .As Thorton himself once said ,sometimes he afraid of this love .So their relationship defeated anything and became the most important thing .There were several examples of this .First ,bad tempered”Black” Burton hit Thornton for something ,Buck saw that and jumped to Burton throat at once .Second ,in the fall of a year ,three partners were travelling on a narrow boat through fast and rocky waters ,Thorton fell