Maybe the wild calling to Buck? What do you think?
https://www.google.com/search?q=What+does+the+hairy+man+represent+in+The+Call+Of+the+Wild+in+chapter+7.+&ie=utf-8&oe=utf-8
19. What does the hairy man represent in The Call Of the Wild in chapter 7.
2 answers
https://www.shmoop.com/call-of-the-wild/chapter-7-quotes.html