New research shows how the Eurasian common shrew (Sorex araneus) changes its brain and bodily size throughout the year. The study, published online in eLife, reveals how changes in gene expression ...

The smallest terrestrial mammal, the Etruscan shrew (Suncus etruscus), is about as big as a person’s thumb and no heavier than a couple of paper clips. To have enough energy to survive, it must eat ...

including in autumn (when the shrews’ brains were shrinking) and in spring (when their brains were regrowing). Compared to autumn shrews, spring shrews displayed upregulation of transcripts that code ...

In fact, shrews, Sorex araneus, can even shrink their skulls by as much as 20%, and they don't stop at the bones, they also shrink their organs and brain too. In winter, shrews spend less time running ...