Call of the Wild
Why do you think buck needed to be cured, according to the man?
Call of the wild question
Call of the wild question
The man tells the conductor that Buck is being taken to San Francisco in order to cure his "fits." Buck and the man have a series of fights for dominance, and the man thinks that he will be able to stop this instinctual drive in Buck.
http://www.gradesaver.com/call-of-the-wild/study-guide/section1/
I think it is because Buck simply would not be subervient to the men putting a rope around his neck. The doctor feels he can tame him.
Why was Buck treated so poorly by all these men, especially the driver in the red shirt?