"The wild still lingered in him and the wolf in him merely slept"
Theme Development #3
"White Fang knew the law well: to oppress the weak and obey the strong"
Eventually in the story White Fang finds his way to an Indian village where there are other dogs. The dogs terrorize White Fang, so he isn't able to get the majority of resources. This is where White Fang's instincts kick in from the wild, and he is able to defeat the other dogs and survive. White Fang gets reminded that if he wants to survive then he must compete to do so.
White Fang has been given to a new master, and has ferociously claimed his spot of dominance over the other dogs there. However White Fang finally meets his match with another dog, but is saved by a man named Scott. White Fang finally understands here that competing is different from picking fights.
In the end, Scott takes White Fang back to his house in California and tames him. White Fang learns to love his master and his family from the peace that surrounds him. He meets one of Scott's dogs, Collie, and has puppies with her. White Fang then lives a happy life.