The family Ochotonidae comprises small, herbivorous mammals commonly known as pikas. Closely related to rabbits and hares (family Leporidae), pikas are distinguished by their compact, rounded bodies, short limbs, small ears, and lack of visible tails. They are primarily found in cold or mountainous regions of Asia and North America, often inhabiting rocky slopes or alpine meadows. Pikas are diurnal and highly social, living in family groups or colonies, and are known for their vocal communication, especially alarm calls. They feed mainly on grasses, herbs, and other vegetation, which they often collect and store as haypiles for winter survival. Due to habitat sensitivity, some species are considered vulnerable to climate change and environmental disturbance.