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Romero T, Nagasawa M, Mogi K, Hasegawa T, Kikusui T. 2014. Oxytocin…
Romero T, Nagasawa M, Mogi K, Hasegawa T, Kikusui T. 2014. Oxytocin promotes social bonding in dogs. Proc Natl Acad Sci USA. 111(25):9085–9090. doi:10.1073/pnas.1322868111.
Introduction
Current theory in behavioral ecology: social behaviors began as ways to reduce predation or increase resources.
Recent discovereis from multiple mammals: social bond quality and quantity can change pressures on the individual.
And where there's pressure and heritability, there's selection.
In many species, social bonds extend beyond direct and indirect fitness.
There is a stark deficit in what is known about social fitness and the neurophysiology behind the reproductive urges.
How these bonds develop remains untested, despite the theories of maternal care.
Aside from the "motherly-love" front-runner, oxytocin (OT) is garnering attention as another source of prosocial behavior.
More importantly, OT has been linked to social memory, peer recognition, and high complexity behaviors, e.g. generosity.
There have been some studies if this holds in other mammals like chimps and dogs, but the results were inconclusive or insignificant.
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Interestingly, oxytocin has multiple roles in reproductive physiology.