At least 70 bird species have been sighted or recorded within the protected area, 46 of which are endemic to the Philippines, including the scale-feathered malkoha, mountain shrike, indigo-banded kingfisher, bicolored flowerpecker, balicassiao, flame-breasted fruit dove, Philippine coucal, Philippine scops owl, white-browed jungle flycatcher, blue-headed fantail, lovely sunbird, Luzon striped babbler, Northern Luzon dark-throated oriole and whiskered pitta. Its mammalian wildlife species include the Asian palm civet, Malayan civet, Philippine long-tailed macaque, Northern Luzon giant cloud rat, Mount Data shrew-rat, Luzon shrew, large flying fox, Philippine warty pig and Philippine deer.