The purrgil are among Star Wars' most mysterious creatures, and Ahsoka has expanded upon their mythos with the journey to the new galaxy. While the Purrgil's ability to travel through hyperspace has always been impressive, the extension of this ability to traverse new galaxies makes their power even more impressive. However, the question remains, why would the purrgil need to travel so far?
Source:https://www.cbr.com/ahsoka-purrgil-elephant-graveyard/