The objective of this study was to determine the population status and social organization of the Hatinh langur in Dong Hoa and Thach Hoa Forest as a basis for proposing conservation measures. Linetransects and direct count methods was used to collect data. The results showed that there were 9 groups with the total number of 81 individuals. | Status and social organization of hatinh langur (Trachypithecus hatinhensis Dao, 1970) in Dong Hoa and Thach Hoa communes forest, Quang Binh province
