Chimpanzees Prefer Fair Play To Reaping An Unjust Reward

from The Primate Diaries. This article presents research which suggests to me that chimpanzees may be smarter than humans after all.

...chimpanzees in this study went beyond the basic tenets of the social contract and demonstrated what could be considered the foundation of social solidarity. ...Even those who benefited from inequality recognized that the situation was unfair and they refused to enjoy their own reward if it meant someone else had to suffer.