How does the author describe Kino in the beginning of chapter 6 of the pearl?

The dichotomy between man and animal is illustrated through Kino. Steinbeck illustrates this through a number of events, such as when Kino attacks the trackers. In this instance, Kino moves from being capable of murder for self-defense to a more cold-blooded killing. Kino kills the three men out of fear and instinct and not because of any tangible threat they pose to him.