Effect of Group Density on the Physiology and Aggressive Behavior of Male Brandt's Voles ().

Population density is well known to influence animal physiology and behavior. How population density affects the aggressive behavior of the Brandt's vole () is, however, little known. The aim of this study was to investigate the effect of group density on physiologic responses and aggressive behavior of male Brandt's voles and their potential underlying neuro-mechanism.