Slave Ship 2

The sonic impact had been enough to startle the creatures on the other side of the trench as well; for a moment, the walls on either side of Bossk and Boba Fett crawled with coiling insectoid forms
and hungry yellow eyes. "Standard operating procedure for the Empire." Boba Fett displayed no signs of unease as the small shadows of the creatures wavered in the glare reflected from his helmet's visor. "Especially when the Emperor's in his punitive mode. These things aren't native to this planet; they're a laboratory hybrid from an Ithorian root-source, genetically enhanced for a zero- moisture environment.
"They exude bio-toxins with a molecular breakdown rate that can be measured in centuries. The levels eventually get high enough to kill them off as well. But by then the entire surface crust of this planet will be riddled with their poison-filled bore holes. There's some refugee colonies of Gholondreine-ß natives on the surrounding system worlds, but they won't be coming back to their homeworld for a long time. Palpatines seen to that."-Chpt.10 pg.379