Herbivorous, feeding on grasses and forbs, twigs and shoots.
About 12 years in nature.
Sexually mature at 2 years. Mating occurs between late November and early January. A single kid is born between late May and mid-June after a gestation period of 6 months and is weaned after 6 weeks.
Cougar and gray wolf. Young may also be taken golden eagle, grizzly bear and wolverine.