University of Vienna study shows dogs can read human emotions

Researchers from the University of Vienna have published a study in the journal iScience demonstrating that dogs possess the neurological capacity to distinguish between various human emotions. By monitoring brain activity, scientists observed that dogs react differently to faces expressing happiness, sadness, anger, or fear.

When viewing smiling faces, dogs showed increased activity in brain regions associated with reward and complex information processing, specifically the caudate nucleus. This area is typically linked to pleasurable experiences such as food or praise, suggesting that a happy human expression carries positive emotional significance for dogs.

The study also noted distinct patterns of brain activity when dogs observed negative emotions, indicating they do not merely register facial changes but actively process different emotional states. Researchers suggest this ability likely evolved through thousands of years of domestication and cohabitation with humans, though dogs also utilize vocal tones, body language, and scent to interpret human moods.