Why did buck hide his hatred for Spitz The Call of the Wild?

Buck hid his hatred for Spitz in "The Call of the Wild" because he understood that openly expressing his feelings could jeopardize his position in the sled team and disrupt the fragile dynamics among the dogs. Maintaining a facade of cooperation allowed Buck to bide his time and wait for the right moment to confront his rival. Additionally, Buck's instinct for survival in the harsh wilderness led him to prioritize strategy over emotional expression. Ultimately, his internal struggle reflected the broader themes of instinct and adaptation in the novel.