In the Korean peninsula, 1 472 species of vertebrates are listed (960 fishes, 15 amphibians, 29 reptiles, 383 birds, 85 mammals): among them 48 species are designated as natural monuments (4 fishes, 38 birds, 6 mammals) and 116 species, endangered species (29 fishes, 4 amphibians, 8 reptiles, 54 birds, 21 mammals). Moreover, 116 species (24 fishes, 9 amphibians, 13 reptiles, 50 birds, 20 mammals) are designated by the Ministry of Environment as the vertebrates of special protection. Total number of publications on biological researches using Korean vertebrates are 946 papers (fishes, 464; amphibians, 90; reptiles, 42; birds, 194; mammals, 156). But the researches on the conservation of biological resources are at basic level: 57% of the papers are related to the reports on the list of local fauna and traditional taxonomy, and only 13% of 87 endangered species in tetrapods were studied, but still in a very limited scope and depth. In Korean rodents, many systematic papers were published using methods ranging from morphometry to DNA systematics, but a few international cooperational researches were carried out. All of Korean rodents are one or two subspecies of the species inhabited in the Eastern Asia or across Eurasia, and it is necessary for the conservation of Korean rodents to carry out international researches with the cooperation of many foreign mammalogists.