- Curly rushed her antagonist, who struck again and leaped aside.Chapter 2 — The Law of Club and Fang (8% in)
- He saw the silent circle, with gleaming eyes, lolling tongues, and silvery breaths drifting upward, closing in upon him as he had seen similar circles close in upon beaten antagonists in the past.Chapter 3 — The Dominant Primordial Beast (97% in)
- Skeet and Nig were too good-natured for quarrelling,—besides, they belonged to John Thornton; but the strange dog, no matter what the breed or valor, swiftly acknowledged Buck's supremacy or found himself struggling for life with a terrible antagonist.Chapter 6 — For the Love of a Man (24% in)
- He was in a savage temper, and, standing over six feet from the ground, was as formidable an antagonist as even Buck could desire.Chapter 7 — The Sounding of the Call (53% in)
There are no more uses of "antagonist" in The Call of the Wild.
Typical Usage (best examples)