Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees

Roman M. Wittig(University of St Andrews), Klaus Zuberbühler(Natural Resources Conservation Service), Kevin E. Langergraber(Boston University), Toni E. Ziegler, Catherine Crockford(University of St Andrews), Tobias Deschner(Max Planck Institute for Evolutionary Anthropology)
Proceedings of the Royal Society B Biological Sciences
January 15, 2014
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