REPUBLIC OF THE PHILIPPINES, REPRESENTED BY DR. RUBINA O. CRESENCIO, OFFICER-IN-CHARGE OF THE BUREAU OF ANIMAL INDUSTRY AND MARILYN V. STA. CATALINA, OFFICER-IN-CHARGE, DEPARTMENT OF AGRICULTURE - REGIONAL FIELD UNIT - CORDILLERA ADMINISTRATIVE REGION (DA RFU-CAR), PETITIONER, VS. HEIRS OF IKANG PAUS, NAMELY: (1) OLARTE A. PAUS, SR., (2) HEIRS OF DAVID PAUS, REPRESENTED BY PETER PAUS, (3) JOSEPHINE BASIL, (4) HEIRS OF MACARIO A. PAUS, SR., REPRESENTED BY NORBERTO D. PAUS, (5) HEIRS OF MONTO PAUS, REPRESENTED BY ELIAS PAUS, SR., AND (6) HEIRS OF FORBASCO PAUS, REPRESENTED BY DOLOR PAUS MALLARE; THE REGISTRY OF DEEDS OF BAGUIO CITY, REPRESENTED BY ITS REGISTRAR, ATTY. JUANITO K. AMPAGUEY; THE NATIONAL COMMISSION ON INDIGENOUS PEOPLES, REPRESENTED BY ITS CHAIRPERSON, ZENAIDA BRIGIDA HAMADA-PAWID; THE LAND REGISTRATION AUTHORITY, REPRESENTED BY ITS ADMINISTRATOR, BENEDICTO B. ULEP; AND HONORABLE CLETO R. VILLACORTA III, PRESIDING JUDGE, BRANCH 6, REGIONAL TRIAL COURT, BAGUIO CITY, RESPONDENTS