The Economic Times

Why do shrews lose brain size in winter but grow bigger noses? Scientists uncover a bizarre seasonal adaptation in tiny mammals

Long-clawed shrews exhibit unusual winter adaptations, shrinking their brains and skulls. However, their snouts grow noticeably larger during the coldest months. This expansion may help warm inhaled air or enhance their sense of smell. Researchers are exploring the environmental triggers for this seasonal nasal growth. These findings reveal a more complex flexibility in animal winter survival strategies.