Spermophilus

Spermophilus, also known as the Old World ground squirrels, sousliks or, sometimes, spermophiles, is an Old World genus of ground squirrels in the squirrel family (Sciuridae). Formerly, the genus was more species rich, but it has since been reduced to contain only species from Eurasia, with many former species having been moved to other genera. The 18 known species are distributed across the Eurasian steppe belt and adjacent regions between Central Europe and Manchuria. They inhabit steppe and comparable short grassland habitats, including airports, as well semi-deserts and, in some cases, agricultural fields. Their diet is dominated by seeds, grasses, forbs, roots and tubers, but may also include small invertebrates. Spermophilus live in colonial burrows, and spend much of the year in hibernation and, in dry regions, aestivation.