Who is the narrator, can she or he read minds, and, more importantly, can we trust her or him?
Third Person (Limited Omniscient)
It's interesting that London’s narrative revolves so closely around Buck and his thoughts, since Buck is a dog and, you know, not a person.
Because the third person narrator goes inside Buck’s head, we get an intricate look at our protagonist’s reasoning, feelings, dreams, and desires. At times, London pulls away from Buck, as in the beginning of the novella, when we are informed of the gold rush and the surroundings from quite a removed vantage point. This happens again at the end of the story, too, when we see Buck in his place in the wild from a point of view that lets us feel both respect and awe.