Informant38

fair play
Monkeys can spot a raw deal when they see one, and if they are not treated fairly they throw a tantrum.
The finding confirms the idea that cooperative behaviour, which relies on the participants' having a sense of fair play, appeared early in our evolutionary history.
Sarah Brosnan and Frans de Waal at Emory University in Atlanta, Georgia, US, are the first to show that animals are capable of recognising unfairness. They trained capuchin monkeys, which are native to the forests of South America, to exchange a token for food. Once the monkeys were used to handling the tokens, Brosnan set them up in pairs and rewarded each in turn.
�New Scientist 09.17.03

Ω{Probably the most rigidly codified moral systems in the human world are in prisons. They're fragmented, and they aren't about the long-term in a generational sense, but they're fiercely adhered to, and implacably enforced.
'Fair play' behind the walls of the primate research community is a pathetically strange and morally disconnected idea.}