On the basis of literature research, observations and dead finds some small mammals of the Cuc Phuong and Phong Nha-Ke Bang Natural Parks and the Ke Go Nature Reserve are considered in comparison. Expectedly some species are restricted to reserves in central Vietnam. Depending on the local conditions and the state of research the knowledge of small mammals is still limited. However, some regional differences in the distribution of species between the considered areas are indicated. Within the Insectivora Suncus etruscus has so far been documented from the Cuc Phuong National Park, and the Nature Reserves Na Hang and Hoang Lien, Crocidura kegoensis in the Nature Reserve Ke Go only. Two species of Rhinolophus (R. marshalli, R. pearsoni) were found in the Cuc Phuong National Park only. Myotis annamiticus is only known from the Quang Binh Province. 21 species of rodents are discussed and for most of them some body and skull measurements and some ecological observations are given. Synanthrope species are: Mus musculus, Rattus tanezumi, Rattus losea, Rattusnitidus und Rattus norvegicus. Arboricol are: Chiropodomys gliroides and Hapalomys delacouri, typical for primary and secondary woodlands are Rattus sikkimensis, Leopoldamys sabanus and Maxomys surifer, of which pictures are shown

Small mammals, Vietnam, Cuc Phuong National Park, Phong Nha-Ke Bang National Park, Ke Go Nature Reserve.