Gazing Into Your Dog’s Eyes Can Synchronize Their Brain With Yours, Study Finds

If you’ve ever gazed into your dog’s eyes and wondered what they’re thinking, keep looking a little longer.

New research suggests that the brain patterns of dogs and humans synchronize in key areas when they share a stare.

The study, conducted in China, was the first time “neutral coupling” — when two or more individuals’ brain activity aligns during an interaction — was witnessed between different species.

Neutral coupling had previously been observed during the interactions of bats, mice, humans and other primates with one another, reported The Conversation. For humans, this often happens during a story or conversation.

Brain synchronicity could be important for forming responses in social encounters with complex behaviors like learning from another person or boosting teamwork.

“When social species interact, their brains ‘connect’. But this case of it happening between different species raises interesting considerations about the subtleties of the human-dog relationship and might help us understand each other a little better,” said canine coach, writer and consultant Jacqueline Boyd, who is also an animal science senior lecturer at Nottingham Trent University, in The Conversation.

Since they are one of the first domesticated animals, dogs and humans share a long history. They are our companions, detectives and herders, providing us with support, love and protection.

Because of this strong bond and history, dogs have developed the ability to identify and respond to their human’s emotional state.

In the study, the research team examined neural coupling using non-invasive electroencephalography — brain-activity recording equipment containing electrodes that pick up neural signals. In the case of the study, these were being transmitted from beagles and humans.

The team looked at how the neural signals behaved when the people and dogs were isolated, as well as when they were together without looking at one another. Then, they allowed the dogs and humans to interact.

When the people and dogs looked into each other’s eyes and the dogs were petted, their brain patterns in areas associated with attention synchronized.

As familiarity between the humans and dogs grew over the five-day period of the study, their neural synchronizations also increased.

“The ability of dogs to form strong attachments with people is well known. A 2022 study found the presence of familiar humans could reduce stress responses in young wolves, the dog’s close relative. Forming neural connections with people might be one of the ways by which the dog-human relationship develops,” Boyd wrote in The Conversation.

The researchers said there is much that is still unknown about the neural coupling of dogs and humans.

“It might well be the case that looking into your dog’s eyes means that your respective brain signals will synchronise and enhance your connection. The more familiar you are with each other, the stronger it becomes, it seems,” Boyd wrote. “So the next time a dog gazes at you with their puppy dog eyes, remember you could be enhancing your relationship.”