Bogstalker

Bogstalkers were ancient creatures from the planet Taris. Before the Jedi Civil War, no one was able to see these creatures, but after Darth Malak's bombardment, bogstalkers appeared again on the planet's devastated surface. They survived for hundreds of years beneath Taris's sprawling undercity and, during the Cold War, they could be seen flying around the planet's toxic swamps. After its "rebirth", the pollution from Taris's destroyed industries made the bogstalkers more resilient and mutated their flesh, making them poisonous to most predators, even the voracious rakghouls.

Text and facts from the “Bogstalker” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.