The purpose of this community service activity is to conduct practical training in determining the age of livestock based on the characteristics of the teeth of livestock. This practical training was carried out at a community farm in Gampa Village, Johan Pahlawan District, West Aceh Regency. The method of implementing this activity is in the form of socialization, counseling, and direct practice with the material of estimating the age of buffalo livestock based on the characteristics of teeth. The results of this community service activity show that the implementation of practical training in determining the age of livestock based on the characteristics of teeth shows an increase in the knowledge and skills of the people of Gampa Village, Johan Pahlawan District, West Aceh Regency in estimating the age of livestock through the characteristics of teeth. By knowing the age of livestock, it will provide better opportunities so that farmers can determine seeds that meet the criteria, choose the right feed, and know the right time to mate and fatten livestock.