Discuss point of view in the call of the wild. give an example from the text that illustrates which point of view is used, and explain how your example demonstrates that point of view.

The point of view London uses in "The Call of the Wild" is the third person limited omniscient.

Omniscient means that the narrator has access to character's thoughts and feelings

Buck’s point of view, for the most part; because London focuses on the character of Buck. He explains the  the dog's thoughts and feelings.  

the novel also shifts briefly into John Thornton’s point of view during his wager involving Buck’s ability to pull a heavy sled