The naked mole-rat, Heterocephalus glaber, is a subterranean rodent which is highly unusual in regards to its social structure, longevity, pain insensitivity and cancer resistance, all of which have made it the subject of a great deal of research in recent years. Yet, much of the basic anatomy of this species remains undocumented. In this peer-reviewed study, researchers describe the morphology of its jaw-closing musculature as revealed by contrast-enhanced micro-computed tomography -