Mountain nerf
From Wookieepedia, the Star Wars wiki.
The Mountain nerf was a subspecies of nerf that were brought to the planet Fennesa. They were descended from nerfs which had been introduced there thousands of years ago and had adapted to the mountainous conditions there. Mountain nerfs tended to be nimbler than the varieties living on flatter terrain. The Fenessa Nerf Herding Council collected data regarding nerf fatalities from various variables on the rocky planet.
