ABSTRACT. In rodents, Gα i2 -expressing sensory neurons (SNs) that co-express vomeronasal receptor type 1 (V1R) are specifically found in the vomeronasal organ (VNO) and project their axons to the accessory olfactory bulb (AOB). In goats, however, Gα i2 /V1R-expressing SNs exist in both the VNO and the olfactory epithelium. Thus, we examined whether the Gα i2 -expressing axons functionally project to the main olfactory bulb (MOB). We analyzed the expression of Gα i2 in the olfactory bulb and found small Gα i2 -immunoreactive clusters in the MOB. The Gα i2 -immunoreactive axons in these clusters made synaptic contacts with second-order neurons in the MOB. These results suggest that some Gα i2 -expressing SNs functionally project their axons to the MOB in goats. KEY WORDS: accessory olfactory bulb, Gα i2 , goat, main olfactory bulb, projection.