This tiny mouse survives 7,000 metres on volcanoe where no mammal can stay alive: Scientists are investigating one of nature's greatest mysteries

{}The Andean leaf-eared mouse thrives at extreme altitudes, a feat previously thought impossible for mammals. This tiny rodent lives above 6,700 meters, enduring thin oxygen and brutal cold. Researchers found highland mice possess superior heat generation and efficient energy use for survival. Genomic studies reveal adaptations for processing plant chemicals and managing toxins. These findings offer potential insights for human medicine and understanding life's resilience.