Final answer:
In the context provided, while sneaking up on the trackers, Kino was compared to a snake, highlighting his stealthy movements.
Step-by-step explanation:
While sneaking up on the trackers, Kino was compared to a snake. This comparison is used to depict Kino's stealth and silent movement which is characteristic of how a snake would approach its prey or navigate its surroundings. This metaphor is effective in conveying Kino's cautious and deliberate approach as he avoids detection by his pursuers.