The investigations were carried out on 37 skulls from the Van-Yoncatepe early Iron Age necropolis (in eastern Anatolia) (first group) and 11 skulls from the scythians castle from Bileskoje Iron Age (second group). The major distance between both occipital condyles and both bases of the jugular processes, the major width of the foramen magnum, height of the foramen magnum, height of the skull, height of the occipital triangle and the length of the dorsal notch were measured. A dorsal notch was present in seven dogs (six male and one female) from Van-Yoncatepe. The average length of the dorsal notch was 2.5 mm. The investigation states that the dorsal notch occurred in dogs from the Iron Age. This anatomical formation had no association with their death.