This study is to determine the phenotypic characteristics of Philippine Native Carabao in selected Barangays served by Philippine Carabao Center (PCC) at WVSU- Calinog Campus for their Artificial Insemination (A.I) programs. The Philippine Carabao (PC) or Native Carabao (Bubalus bubalis) 2N=48 is classified as swamp type buffalo and small hold-farmers use it as a source of draft animals in agricultural production The Philippine swamp type buffalo is believed to have been imported by Chinese colonizers as work animals sometimes between 300 to 200 B.C (PCAARRD, 1992). The Descriptive Research was used in the study with qualitative and quantitative data gathering methods. Qualitative data collections includes the discrete characteristics like: the age, sex, body hair coat colour type, hair type, ear orientation, facial head profile, backline profile and rump profile, while the quantitative data collection includes: the hearth girt, body length, height, muzzle circumference and hock circumferences. Quota sampling was done in selected 10 barangays with 5 heads each barangay. There were 50 heads of carabaos involved in the collection of data. The result of the study find out that majority of the animals were female about 90 per cent, with black colour, horned, with straight facial head profile, and the backline profile was slopping-up toward the rump and with flat rump. he average age of the animals ranges from 1year to 20 years old with an average of 7.31 years old. The average horn length was 34.28 cm, while the distance between the 2 tips of horn was 55.44 cm. The 100% of carabaos got a lateral ear orientation with an average ear length of 20.7 cm and has a long tail length below the hock with average of 71.6 cm. The age of animals was directly proportional to their quantitative characteristics like; the chest girt, body length, height, and horn length. It implies that while the animal grow older, most of their quantitative characteristics also develop and increases in term of sizes and measurement in a favourable environment following good management practices. The study also find out that most farmers in the RIZ o PCC at WVSU-Calinog Campus raised female carabaos. It implies that farmers were receptive to A.I. breeding program introduced by the agency since 1990’s, evident by 90% per cent of the carabaos were females.