Scientists had previously observed that some species of shrews undergo a form of biological plasticity in which their bodies, skulls, brains and some organs shrink in the winter, then regrow in the spring. Now, a new study in Japan, published in the Proceedings of the Royal Society B: Biological Sci ences, has taken a closer look at this phenomenon and found that shrews' snouts exhibit an inverse effect, growing and then shrinking again. ...read more read less