Bark rats were robust rat creatures that were native to the world of Cholganna. These rats comprised the primary diet of the nexu, a predatory species that used infrared sight to locate warm-blooded creatures in the chilly forests of Cholganna. Bark rats were seen more frequently than the arboreal octopi also found on Cholganna.
Within the current Star Wars canon, the earliest mention of bark rats occurred in the 2018 reference work Star Wars: The Complete Visual Dictionary, New Edition. They initially appeared in the Star Wars Legends continuity, with their debut in the 2002 reference book Star Wars: Attack of the Clones: The Visual Dictionary, authored by David West Reynolds.
- Star Wars: The Complete Visual Dictionary, New Edition (Initial Mention)
- " Geonosis and Other Planets in the Outer Rim " — Star Wars Encyclopedia