This study is based on 30 (11 ♂♂, 19 ♀♀) specimens of Spermophilus xanthoprymnus collected in Kırıkkale provience. Specimens were divided into two age groups as young and adult, according to field note, fur colour, molar teeth worn and baculum shape. In this study, habitat, fur colour, behaviour, hair morphlogy, baculum shape, external and cranial characteristics, karyological features and exoparasites of Spermophilus xanthoprymnus were examined. Three animals (1 ♂, 2 ♀♀) were observed in terms of feeding and behaviour features in lab. The baculum shape was given and hair structure was determined as “crenate” type. In S. xanthoprymmus diploid chromosome number was 2n= 42, fundamental number NF= 81, and NFa=78. Data belongs to skull and baculum were compared with literature data and our specimens were represented the Spermophilus xanthoprymnus gelengius.