Blind and mostly hairless, with front teeth that put beavers to shame, the naked mole-rat is one of the most unusual-looking ...

Two warm-blooded mammal species have triumphed in the fast-paced environment of New York City: human beings and rats. Robert Sullivan was fascinated with how eager many people are to save whales or ...

Scientists have persuaded adult stem cells to develop into complete tooth crowns in rats, furthering their goal of growing replacement teeth for humans, according to a study in the current issue of ...

Like most mammals, humans are diphyodont: We have two sets of teeth – baby teeth and adult teeth. The technical term for our baby teeth is deciduous teeth because they fall out, the same way deciduous ...

These tooth models show the relative size comparison of a human tooth versus a rat tooth -- to give an idea of the technical challenges involved with performing dentistry on such a small scale. NOTE: ...