User:Rraju2/sandbox
'''Chimpanzees Create Relationships Through Food Sharing'''
The hormone oxytocin plays a huge role in the formation of relationships. Just as the mother-offspring bond is flourished through the presence of oxytocin, oxytocin may play a role in promoting cooperative long term relationships among chimps.Max-Planck-Gesellschaft (2014, January 16). The way to a chimpanzee's heart is through its stomach. ScienceDaily. Retrieved January 18, 2014, from http://www.sciencedaily.com /releases/2014/01/140116113504.htm
The level of oxytocin in the urine of chimpanzee's are significantly higher in those that participated in food sharing.{{cite journal|title=Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees.|journal=Proceedings. Biological Sciences / The Royal Society|date=2014|volume=281|issue=1778|pages=20133096|doi=10.1098/rspb.2013.3096|pmid=24430853|last1=Wittig |first1=Roman M. |last2=Crockford |first2=Catherine |last3=Deschner |first3=Tobias |last4=Langergraber |first4=Kevin E. |last5=Ziegler |first5=Toni E. |last6=Zuberbühler |first6=Klaus |pmc=3906952 }} Food sharing is a less frequent behavior than grooming in chimps, however, it seems that it has a stronger effect on relationships.
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