Note : The “Siberian mouse” is not a separate species; it is a naturally occurring population of the house mouse that has evolved distinct traits to survive Siberia’s harsh winters. | Region | Typical Habitat | |--------|-----------------| | Western Siberia (Yamalo‑Nenets, Khanty‑Mansi) | Tundra grasslands, forest‑steppe margins, human settlements (grain stores, barns) | | Southern Siberia (Altai, Sayan) | Meadowlands, low‑elevation forests, agricultural fields | | Urban & Suburban Areas | Basements, sheds, heated buildings (provides winter refuge) |

Date: 14 April 2026.

Prepared by: Senior Mammalian Biologist, North‑East Small‑Mammal Research & Conservation Facility (NESRCF)