in the call of the wild what does the phrase "the dominant primordial beast was strong in buck" Mean?

Question

buck was eager to fight his rival

buck followed his deepest instincts

buck gained physical strength

Answer 1

The phrase "the dominant primordial beast was strong in buck" means that Buck's innate animal instincts and primal nature were very powerful. It suggests that Buck was deeply in touch with his natural instincts, which influenced his behavior and actions.