Thraxsos, large, predatory, reptilian creatures of limited intelligence, were originally found on the moon known as Olgothon 3, their homeworld. These carnivores, possessing a degree of sentience, consumed any moving prey after the extinction of their natural avian predators, a colossal bird species. During the latter stages of the Clone Wars, Jedi Knights Iskat Akaris and Tualon Yaluna were forced to eliminate two thraxsos in order to protect themselves during their mission to enlist the slicer Ginntho.
Regarding their physical attributes, Thraxsos were powerfully built, with short legs and elongated tails, reaching a height roughly equivalent to the shoulder of a typical humanoid. A protective frilled shell adorned their backs, contrasting with their exposed and delicate underbellies. Their scaled hides displayed a pattern of violet and green stripes, and their blood was a viscous, violet substance.