University of Vienna study shows dogs recognize human emotions

Researchers at the University of Vienna have provided new evidence that dogs can distinguish between different human facial expressions using brain activity. In a study published in iScience, scientists used MRI scans to observe the brain responses of twelve dogs, including Border Collies, Labradors, and Golden Retrievers, as they viewed photos of unfamiliar human faces.

The study revealed that happy or smiling expressions activate specific regions of the canine brain, such as the temporal cortex and the caudate nucleus, which are associated with reward processing and positive expectations. This suggests that a human smile may function similarly to a food reward for dogs.

Furthermore, the research demonstrated that dogs can differentiate between various negative emotions, including fear, anger, and sadness, through distinct patterns of brain activity. Lead author Laura Cuaya noted that these findings highlight how dogs have evolved to understand human expressions to better cooperate with people.