Collared Pikas mostly live in cool and dry mountain boulder fields, or talus, at elevations above the treeline. The boulders help shelter the pikas from weather and predators. Medium to large rocks (greater than 30 cm), with not many smaller rocks mixed in, provide spaces for pikas to live between them. Suitable boulder fields must have alpine meadows nearby where pikas can find food.
Pikas do not hibernate during the winter and survive using stored food. Pikas spend long hours harvesting herbs and grasses, making hay-piles to supply food during the winter.
Pikas defend individual territories of about 15 to 25 m radius.
Female pikas have only a 30 day gestation period, give birth to 3 to 4 offspring, and usually do not live longer than 4 years.