Mice exhibit CPR-like care for distressed cage-mates, linked to oxytocin

A USC-led study observed mice performing first-aid–like behaviors toward an unconscious cage-mate—sniffing, grooming, and face-directed actions—triggered by unresponsiveness and strengthened by oxytocin signaling; responses are stronger for familiar cage-mates, suggesting an innate caregiving tendency that could aid group survival, though it is not human CPR.