Mice Perform CPR

April 01, 2025 

Scientists at the University of Southern California, USA, found that mice try to revive other unconscious mice with a method that is similar to cardiopulmonary resuscitation (CPR) used by humans. For their study, researchers kept conscious mice with unconscious mice, dead mice and mice that could not move and found that the conscious mice tried to resuscitate nonreactive mice by tugging on their tongue to facilitate breathing by freeing up breathing pathways. Scientists also observed that the mice tried to help unconscious mice breathe by extracting objects that had been inserted into their mouth by scientists. The study also showed that the conscious mice were aware of the difference between mice that were sleeping and those that were dead. Furthermore, the study revealed that rather than unfamiliar mice, the conscious mice focussed on reviving known ones.

DID YOU KNOW? 
Mice display different facial expressions based on the emotions they experience.