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How puppy dog eyes do their trick?

Posted by Science Oxford on October 2, 2009 | comments

I have to admit that this article sounds like a bit of a joke, but i’m sure these Japanese researches would say it has merit.
The team suggest that a dog’s gaze causes the release of oxytocin (the trust hormone), which then causes you to be far more forgiving than you normally would.

If you’ve ev­er won­dered how just one dole­ful look from your dog al­ways makes you for­give that chewed-up shoe—or al­most an­y­thing else—sci­en­tists may have an an­swer.

A dog’s gaze trig­gers re­lease of the so-called “trust hor­mone” ox­y­to­cin in own­ers, ac­cord­ing to Jap­a­nese re­search­ers.

Ox­y­to­cin, pro­duced by the pi­tu­i­tary gland at the base of the brain, has been im­pli­cat­ed in bond­ing be­hav­iors in an­i­mals in­clud­ing hu­mans. Ex­pe­ri­ments have even found that sniff­ing ox­y­to­cin in­creases a per­son’s trust­ful­ness of others.

In a new study, Mi­no Na­ga­sawa of Az­abu Uni­ver­s­ity in Ja­pan and col­leagues placed dog own­ers to­geth­er with their pets in a se­ries of half-hour ses­sions.

The ex­pe­ri­menters meas­ured the lev­els of ox­y­to­cin in own­ers’ urine be­fore and af­ter the in­ter­ac­tions.

The investigators found in­creases in the hor­mone lev­el that were highly cor­re­lat­ed to “the fre­quen­cy of be­hav­ior­al ex­changes in­i­ti­at­ed by the dog’s gaze,” they re­ported, writ­ing in the Dec. 14 is­sue of the re­search jour­nal Hor­mones and Be­hav­ior.

The re­search­ers ar­ranged an­oth­er set of ex­pe­ri­ments that were sim­i­lar, ex­cept that own­ers were in­structed not to look at their pooch dur­ing the in­ter­ac­tions. In these tests, the ox­y­to­cin-gaze cor­rela­t­ion was­n’t found, the sci­en­tists re­ported.

In the past, it has­n’t been clear wheth­er ox­y­to­cin is linked to bond­ing be­tween dif­fer­ent spe­cies, wrote Na­ga­sawa and col­leagues. “We con­clude that in­ter­ac­tions with dogs, es­pe­cially those in­i­ti­at­ed by the dog’s gaze, can in­crease the uri­nary [ox­y­to­cin] con­centra­t­ions of their own­ers as a man­i­festa­t­ion of at­tach­ment be­hav­ior.”

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