The greater krayt dragon represented a sizable species within the krayt dragon family, formidable predatory reptiles native to the sands of Tatooine. Possessing a total of ten powerful legs, these creatures were uniquely adapted to navigate, and essentially "swim" through the ever-shifting desert landscape.
The greater krayt dragon was a member of the krayt dragons family, a collection of immense carnivorous reptile species inhabiting Tatooine. Key features included a long, extended neck, a tail resembling a whip, prominent horns, rows of sharp teeth, and a total of five pairs of legs.
The greater krayt dragons would bury themselves within the loose dunes, effectively "swimming" below the surface as they stalked prey, setting up ambushes to devour their victims.

Greater krayt dragons evolved on Tatooine, a planet characterized by its desert environment, situated in the Outer Rim territories of the galaxy. In the year 0 BBY, C-3PO stumbled upon the skeletal remains of a young, deceased greater krayt dragon while he was lost within the expansive Dune Sea.
Wishan, a Jedi Master, once utilized the Force to create a Force-sculpture from clay, crafting a representation of a greater krayt dragon. This creation served as a 72nd birthday present for the librarian of the Jedi Temple.
The greater krayt dragon made its initial appearance, albeit in skeletal form within the Tatooine desert, in Star Wars: Episode IV A New Hope. The skeleton used to depict the greater krayt dragon was constructed from fiberglass sauropod bone replicas, originally created for the 1975 Disney comedy film One of Our Dinosaurs is Missing. These props were abandoned in the Tunisian desert following the completion of filming. In 1995, Dr. David West Reynolds, an archeologist and contributor to Star Wars Insider magazine, visited the Tunisian site. He discovered the bones, untouched for nearly two decades, alongside paleontologist Dr. Micheal J. Ryan, who was investigating the Roman ruins and paleontological resources of Tunisia with Dr. Reynolds.