The blurrgs were two-legged reptilian beasts that lived on the plains of the forest moon of Endor. They were used by the Sanyassan Marauders living on that moon to do their heavy labor. The Sanyassans originally used them as attack creatures, but they were too slow while carrying cargo and calm, so they used them as beasts of burden instead. They controlled them with spiked chain bridles, riding on their backs with stiff saddles.
A blurgg, with young, next to an Ewok for size comparison.
The blurrg's huge mouth ate almost anything edible, perfect for clearing savanna grass, weeds, and saplings. Blurrgs were strong, fast and stupid—so much so that they walked right into small trees knocking them down. The egg-laying creatures usually produced 5 or 6 babies at a time. In their early years babies stayed very close to their mothers for protection from Boar Wolves. Blurrgs communicated through a series of roars.
During the Clone Wars, clone troopers mounted on blurrgs were used as heavy cavalry on various worlds. Twi'leks somehow acquired dozens of blurrgs, and used them as beasts of burden and also as riding mounts against CIS forces during the Battle of Ryloth. There was also a location on the forest moon of Endor named Blurrg's Isle, which seemed to be the home of a significant population of blurrgs.