Oxytocin promotes social bonding in dogs

Romero, Teresa, Nagasawa, Miho, Mogi, Kazutaka , Hasegawa, Toshikazu and Kikusui, Takefumi (2014) Oxytocin promotes social bonding in dogs. Proceedings of the National Academy of Sciences, 111 (25). pp. 9085-9090. ISSN 1091-6490

Full content URL: http://dx.doi.org/10.1073/pnas.1322868111

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Item Type:Article
Item Status:Live Archive


Recent evidence suggests that enduring social bonds have fitness benefits. However, very little is known about the neural circuitry and neurochemistry underlying the formation and maintenance of stable social bonds outside reproductive contexts. Oxytocin (OT), a neuropeptide synthetized by the hypothalamus in mammals, regulates many complex forms of social behavior and cognition in both human and nonhuman animals. Animal research, however,
has concentrated on monogamous mammals, and it remains unknown whether OT also modulates social bonds in nonreproductive contexts. In this study we provide behavioral evidence that exogenous OT promotes positive social behaviors in the domestic dog toward not only conspecifics but also human partners. Specifically, when sprayed with OT, dogs showed higher social orientation and affiliation toward their owners and higher affiliation and approach behaviors toward dog partners than when sprayed with placebo. Additionally, the exchange of sociopositive behaviors with dog partners triggered the release of endogenous OT, highlighting the involvement of OT in the development of social relationships in the domestic dog. These data provide new insight into the mechanisms that facilitate the
maintenance of close social bonds beyond immediate reproductive interest or genetic ties and complement a growing body of evidence that identifies OT as one of the neurochemical foundations of sociality in mammalian species.

Keywords:cooperative bonds, oxytocin, cooperative mechanisms, dogs, JCOpen
Subjects:C Biological Sciences > C120 Behavioural Biology
Divisions:College of Science > School of Life Sciences
ID Code:25900
Deposited On:27 Jan 2017 10:15

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