In a new study published in the journal Current Biology, lead author Takefumi Kikusui of Azabu University in Japan and colleagues demonstrated how the love hormone could make dogs teary-eyed ...

The dog and cat study showed that neither species consistently increased oxytocin in humans. Only 30 percent of participants had an increase in oxytocin after playing with an animal.

New Study Shows Dogs Adore Human Smiles (and Vice Versa!) Because of the 'Love Hormone' The University of Helsinki study indicated that dogs are more influenced by smiling faces than angry or ...

Researchers found that oxytocin made dogs interested in smiling human faces. It also made them see angry faces as less threatening. Associated with affection and trust, the hormone oxytocin is ...

Of the dog-human duos that spent the most time gazing into each other’s eyes, the dogs experienced a 130% rise in oxytocin levels, while humans experienced a 300% increase.