Festuca thurberi is a species of grass known by the common name Thurber's fescue. It is native to a section of the western United States encompassing New Mexico, Utah, Colorado, and Wyoming. It probably also occurs in parts of Arizona. This grass provides an adequate forage for livestock, more so for cattle than for sheep. Sheep probably find the grass less palatable because of its rough leaves. Cattle grazing in quaking aspen communities consume this grass in large quantities. Many wild animals such as elk utilize the grass as well.