[citation needed] The administrator of Jeju-mok regional office at that period, known as Yi Hyeong-sang, surveyed around whole island, and those records were collected in Tamna Sullyeokdo.

This was intended to limit cross-breeding with cattle imported from abroad, but also had the effect of bringing the three minority breeds – the Jeju Black, the Chikso [ko] or Korean Brindle and the Heugu [ko] or Korean Black – close to extinction.

As per their project goals expectations, if successful, over 600 of these black cattle will exist in Jeju area in near future.

[citation needed] In 2013, Republic of Korean government acknowledged the historical and cultural values of Jeju Black Cattle and assigned it Natural Monument No.

The Korea Animal Improvement Association, which mainly functions for management of individual identification and pedigree information of seedstock animal owned either by institutions or private breeders, also manages breeding herd information of Jeju Black Cattle in their registration database system, which is open to public.