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Canine can cry when homeowners come residence, research suggests


The dog looks cheerful

The canine appears to be like cheerful


A small research discovered that canine can cry tears of pleasure when they’re reunited with their homeowners.

Japanese researchers say canines will be actually thrilled after they see their human companions after a protracted interval of absence.

It’s believed that tears deepen the bond between canine and their homeowners.

The research, which was primarily based on the conduct of twenty-two canine, seemed on the reactions of canine that have been reunited with their homeowners and with different folks they knew.

To check their concept, lecturers at Azabu College and Jishi Medical College positioned strips of paper beneath the canine’ eyes throughout regular interactions with their homeowners and one minute earlier than they have been reunited with them 5 to seven hours after separation.

They came upon when the canine noticed their homeowners, this was the one time they shed tears. There was not the identical degree of elevated tear manufacturing when the canine have been reunited with folks they have been conversant in, however not their homeowners.

dog looking at camera

canine taking a look at digicam


To see if the tears have been associated to their emotions, the researchers utilized an answer containing oxytocin, a key hormone concerned in bonding, to the canine.

After utilizing the hormone, they discovered that the canine’ tears elevated considerably.


Whereas canine are identified to cry to maintain their tear ducts clear, this has not been linked to their emotional response earlier than.

“We’ve never heard of the discovery that animals shed tears in joyful situations, such as when their owners are reunited,” stated Takefumi Kikusui, one of many research’s authors within the journal Present Biology.

Whereas homeowners could also be extra conversant in tail wagging or face licking than their ecstatic pets, canine tears can even have an effect on their human companion.

A canine’s gaze stimulates the discharge of oxytocin, which makes the homeowners extra caring or protecting of their pets.

The scientists additionally discovered that homeowners felt a higher want to care for his or her animals after they noticed them with teary eyes.

“Their tears may play a role in deepening interrelationships and leading to greater interdependence between species,” the researchers wrote.

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