One of Myrkr's indigenous life forms is the violent vornskr. These vicious animals are long-legged quadrupeds with vaguely canine muzzles, sharp teeth, and lethal whip-like tails. Usually sedate during the day, vornskrs are excellent nocturnal hunters. At night, they are predators without equal in the thick forests. However, there is no guarantee of safety even in full daylight as the animals have been known to hunt while the sun was high in the sky. The vornskr's whip-like tail is an effective attack weapon. It causes painful welts and is coated with a mild poison which can stun creatures as large as a human. Once stunned, the animal leaps to finish its prey with its powerful jaws and piercing teeth.
While Luke Skywalker was on the world, the vornskr demonstrated an unnatural hatred for the Jedi. Even the domesticated pets in Karrde's camp reacted violently toward Skywalker. Those in the wild did their best to kill him. Karrde has two vornskrs trained to serve as guard animals and pets. By removing their tails, he found that their normal hunting aggression was significantly reduced, and they were easily domesticated and trained. He has found his pet vornskrs, named Sturm and Drang, to be loyal and affectionate toward people they are familiar with.