Once Buck was sold, he had a number of adventures. One of which was about the law of Club and Fang. Just as he was sold, he sprang with fury at a person in a red jacket, but that man hit him right down with the club, this happened numerable times, until Buck finally was knocked out. From this experience, Buck learned that he stood no chance against men armed with clubs.
Buck made an enemy just as he entered the camp. The enemy was the team leader, Spitz. Therefore Spitz never lost an opportunity to kill Buck, and Buck never lost an opportunity to kill Spitz. Later, Buck and Spitz found an opportunity for an fight to the death. And in that fight, Buck won! Therefore from then on, Buck was the team leader.
Later on in Buck's life, he learned of, "The Toil of Trace and Trail". Buck was harnessed like a horse, and brought a big sled behind him. He learned how hard this was, and how good it felt to be doing it. The team leader would be at the very front, and it would be his responsibility for making a good start.
After they got to their determined destination, Buck was sold then to a inexperienced group of Gold Finders. Buck refused to move once he knew that danger ahead, and got the worst whipping, thankfully, a man named John Thornton saved him, and Buck grew to love him. Buck went with John Thornton for a long time, and was very sad when Indians found and killed Thornton. After being John Thornton's pet, Buck ran into the wild.
I really liked this book and I recommend it to kids of all ages (as long as they can read the book).