A small rodent species endemic to Arctic and subarctic regions, characterized by its compact body and adaptations to cold environments.
Arctic tundra, subarctic grasslands, wetlands, and coastal regions across northern Eurasia and North America, typically in areas with dense vegetation and proximity to water sources
Critical component of Arctic ecosystem food webs, serving as prey for predators like Arctic foxes, owls, and ermines; contributes to seed dispersal and soil nutrient cycling
