In this study immunohistochemical examination of the olfactory bulb in the porcupines was conducted. For this purpose, two adult porcupine olfactory bulbs were used. The tissue was applied on routine immunohistochemistry procedure and immunohistochemical staining was carried out by using the peroxidase-antiperoxsidase (PAP) method. In immunohistochemical examination, somatostatin immunoreactive (IR) cells were located in periglomeruler region, external pleksiform layer and granular cell layer of the olfactory bulb.