Grass Trekkers, expert and ferocious hunters, were a race of semi-sentient beings. They were originally from Endor's forest moon.
The "Sentient Species of Endor" article, found inside the "Guide to the Galaxy" section of Star Wars: Build the Millennium Falcon 38 magazine, mentioned Grass Trekkers in current Star Wars canon. De Agostini published this magazine on September 23, 2015. The race began in the Star Wars Legends continuity. Their debut was in "The Land of the Gupins," the eighth episode of Ewoks' first season, a TV series that aired on October 26, 1985.