by Arlene Weintraub 
During the 60 Minutes story we heard a lot about oxytocin, commonly called “the love hormone.” This is a hormone, made in the brains of both dogs and people, that promotes the bonding between mothers and their babies, for example, and makes us feel good when we hug a loved one. Turns out when dogs make eye contact with their people or jump in their laps, both dogs and the recipients of their affection get more of an oxytocin rush.

But are dogs empathetic? Do they feel our emotional pain and joy? Several studies suggest they do. For example, in 2013, a group of Japanese researchers showed that the phenomenon of contagious yawning—long believed to be a sign of empathy—does not just happen among people. The scientists observed 25 dogs yawning in response to the yawns of both their owners and those of people they did not know. They measured the dogs’ heart rate to show that their yawning was not caused by stress (as many dog trainers believe it is).

Dogs may also be empathetic because in addition to sharing the love hormone with their humans, they share the stress hormone, called cortisol.

The researchers concluded that the dogs were showing “emotional contagion,” a basic form of empathy. What’s more, the empathy crossed species—a rare occurrence, they suggested.