Contagious yawning is a phenomenon where seeing, hearing, or even thinking about someone yawning triggers a similar response in another person. This behavior is commonly observed in humans and some animals, such as dogs and chimpanzees. It is believed to be linked to social bonding and empathy, as individuals who are more empathetic tend to yawn more in response to others. Researchers suggest that contagious yawning may serve a purpose in regulating brain temperature and maintaining alertness within a group. While the exact mechanisms behind this behavior are still being studied, it highlights the interconnectedness of social interactions among individuals.