Fauna has been confirmed and recorded so far to have 598 species of 130 families, 31 orders including 162 bird species, 55 fish species, 28 reptile species, 13 amphibian species, 24 bat species, 63 mamal species, 158 insect species, 96 snail species.
There are 51 rare and valuable and endemic species listed in the Vietnam Red Book (2000) and the IUCN’s Red List (IUCN, 2003) of which there are 26 mamal species, 5 bat species, 9 bird species, 5 freshwater fish species, 6 reptile species. It is noticable to affirm the certain existence of big mammals such as Clouded Leopard Pardofelis nebulosa, Golden Cat Catopuma temminckii, Owston’s Palm Civet Hemigalus owstoni, Serow Naemohedus sumatraensis, Asiantic bear Ursus thibetanus, Malayan Porcupine Hystrix brachyura.
Pu Luong Nature Reserve is perhaps most renowned for remaining populations of the globally critically endangered Delacour’s Langur Trachypithecus delacouri, which is the second biggest population in Vietnam, after Van Long Nature Reserve. An estimated total of 31 to 38 individuals of the primate are believed to occur in four separate sub- populations at the Nature Reserve.