Herbivorous, feeding on grasses and forbs ; seeks out salt licks.
From 9 to to 14 years.
Sexually mature at 2 years. Mating occurs between late October and December. A single lamb is born between early May and early June after a gestation period of 6 months, and is weaned after 5-6 months.
Cougar and gray wolf; young may also be taken by coyote, grizzly bear, wolverine, Canadian lynx and golden eagle.