Dogs hijack the human bonding pathway

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Science  17 Apr 2015:
Vol. 348, Issue 6232, pp. 280-281
DOI: 10.1126/science.aab1200

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Tens of thousands of years ago, a wolflike predator gave rise to a more docile lineage, which soon became our trusted fireside companions (1). How did dogs become so embedded in human societies? Why do we feel genuine friendship, love, and social attachment in our relationships with dogs? On page 333 in this issue, Nagasawa et al. (2) reveal a powerful mechanism through which dogs win our hearts—and we win theirs in return.