Pallas's pika (Ochotona pallasi), also known as the Mongolian pika, is a species of mammal in the pika family, Ochotonidae. It is found mainly in the mountains of western Mongolia. There are four subspecies: O. p. pricei, O. p. hamica, O. p. helanshanensis and O. p. sundica. One notable difference is that O. p. pricei generally dwells in dry steppe habitats and may build burrows while the other subspecies tend to prefer rocky habitats. However, none of the subspecies live strictly in either sort of habitat.