What is the effect of Buck’s returned ferocity on the wildlife he encounters?

The effect of Buck’s returned ferocity on the wildlife he encounters primarily establishes dominance over them. Throughout "The Call of the Wild," Buck evolves from a domesticated pet into a powerful wild animal, reclaiming instincts and traits necessary for survival in the harsh Yukon wilderness. His newfound strength and confidence, coupled with a primal nature, allow him to assert himself in ways that smaller or weaker animals cannot contest. As he demonstrates his physical capabilities and aggression, other animals recognize his dominance and generally avoid challenging him, which solidifies his position in the natural order of the wild.

In this context, rather than cultivating friendly relationships with other animals, Buck's ferocity leads to a clear hierarchy, where he is seen as a formidable presence. While some might be inclined to perceive this ferocity as isolation or fear, it actually serves to establish Buck's dominance and control over his environment, ensuring that he can survive and thrive in a competitive wilderness.