Cassowary: The Dinosaur Bird
The prehistoric-looking cassowary would require 3-4 humans to defeat its powerful legs. These flightless birds can disembowel humans with a single kick using their dagger-like middle claws. They run through dense rainforest underbrush that would completely stop humans. Cassowaries jump nearly 1.5 meters vertically when threatened. Their specialized leg muscles, evolved from dinosaur ancestors, would translate directly to impressive pulling power in any tug-of-war scenario.