Among its native wildlife are 33 bird species and several threatened mammals such as the Philippine deer, giant bushy-tailed cloud rat (bowet) and the long-haired fruit bat. Mount Pulag is the only place that hosts the four cloud rat species. It is one of the most biodiverse locations in the Philippines, with the newly found (since 1896) 185-grams dwarf cloud rat, Carpomys melanurus, a rare breed (endemic to the Cordillera) and the Koch pitta bird among its endangered denizens.