Horax / Legends Horaxes were large non - sentient , reptilian creatures native to the Outer Rim planet of Nelvaan . Their powerful muscular frames could grow over fifteen meters tall . Solitary and territorial , horaxes only gathered in pairs for mating purposes or to fight over territory . Nelvaanian locals used the scales of the horaxes ' tails to make a special elixir , the scent of which could drive away horaxes for an entire year . During the Clone Wars , the horax population began to decline due to climate change caused by a local siphon generator operated by the Techno Union . In 19 BBY , Jedi Knight Anakin Skywalker killed a horax after being attacked , disrupting the initiation ritual of a young Nelvaanian boy in the process . Biology and appearance . Horaxes were large reptiles native to the Outer Rim planet of Nelvaan . The quadrupedal creatures were capable of growing to heights of over fifteen meters , thanks to the low gravity of their homeworld . Their powerfully muscled frames were covered in thick , knobby , blue skin , and they had reddish - orange eyes . The mouth of the horax contained many very sharp teeth , the most prominent being the four enormous saber - like fangs that protruded from its maw . At the end of the beasts ' snouts was a pair of shovel - like horns used to uproot entire trees and split open siltcrawler burrows , revealing entire hibernating colonies to be eaten . The tail of a horax was long and heavy , lined with sharp spurs , and concluded with a club made of dense bone . The tail was also covered in scales . Behavior . The carnivorous horaxes were solitary creatures . They were also non - sentient and were very territorial , using their fangs , horns , and clubbed tails to fight each other for territory and only gathering in pairs to mate . They preyed upon siltcrawler colonies for food and were not able to fare well in extreme cold . History . At some point , the Nelvaanian inhabitants of the horaxes ' homeworld discovered that a special elixir could be made from horax tail scales , the scent of which would repel the massive beasts for an entire year . It eventually became a customary coming - of - age ritual for young Nelvaanian boys to venture out into the forests and bring back a scale from the tail of a horax , granting them a place among the highest warrior ranks . The Trandoshan hunter Qyzen Fess , who lived during the Cold War between the Republic and the Sith Empire , hunted several horaxes during his career . During the galaxy - spanning Clone Wars between the Galactic Republic and the Confederacy of Independent Systems , the Separatist - aligned Techno Union built a laboratory that operated off a siphon generator that drained the vicinity of thermal energy . This plunged the planet into an ice age that caused many horaxes to die , reducing the population to scarcity . Toward the end of the Clone Wars in 19 BBY , Jedi Master Obi - Wan Kenobi and Jedi Knight Anakin Skywalker were sent to Nelvaan in search of the notorious General Grievous of the Separatist Droid Army . Upon arrival , Skywalker , Kenobi , and their clone trooper forces were attacked by a horax , resulting in the death of all the clones . However , Skywalker managed to kill the horax , though in the process disrupting the coming - of - age ritual of a young Nelvaanian boy . After being taken to the locals ' village of Rokrul , Skywalker was sent to destroy the Techno Union base , as the Nelvaanian Shaman Orvos had determined that Skywalker was the Holt Kazed , or " Ghost Hand , " of local legend . While traveling through a cave on the way to the base , Skywalker came upon some cave drawings , some of which depicted horaxes . Skywalker then experienced a Force vision of the future in which the paintings told the story of a Nelvaanian male with a powerful arm destroying enemies , one being a horax attacking his village . Behind the scenes . The horax first appeared in the twenty - second chapter of the " " television series , which aired on March 22 , 2005 . The twenty - fourth chapter , released on March 24 , featured horax wall paintings . The horax was first named in the audio commentary on the series ' DVD . Much of the monster was drawn by Mike Kim . The horax was also included in the Wizards of the Coast " Saga Edition " roleplaying game .