When you smile at your four-legged friend, do they realise how happy you are? Every dog lover is secretly convinced they do, but science was still looking for concrete biological proof. To find out for sure, a team of researchers carried out a fascinating experiment, observing the brain activity of several dogs placed inside an MRI scanner.
During these imaging sessions, the animals remained completely still while watching different human faces flash up on a screen. From joy and anger to fear and sadness, the scientists analysed their brains' precise response to each of our emotions.
A smile triggers a spark of happiness
The team's findings immediately amazed the specialists. As reported by the science magazine Science & Vie, the sight of a smiling face instantly activates the reward centre in a dog's brain, particularly in the right temporal cortex and the caudate nucleus. This is the exact same area of the brain that lights up when they get a treat or hear enthusiastic praise from their family.
When faced with negative emotions like fear or anger, the dog's brain activates completely different, highly specific patterns. This means our pets don't mistake a happy face for a frown; they subtly decode the state of mind of the person in front of them.
A bond shaped over thousands of years
This incredible capacity for visual empathy is a direct result of the long-standing love affair between humans and dogs. Thanks to more than 15,000 years of living together and domestication, dogs have developed a unique sensitivity to reading our expressions and fitting into our daily lives.
The researchers now plan to take their study further by combining faces with vocal sounds and scents. But one thing is already certain: when you smile at your faithful companion, their brain receives a wonderful message of pure joy!
Translated from the FR Wamiz website using artificial intelligence
