Injustice

Monkeys understand Justice and Equity – YouTube.

This is a pretty famous clip. It bears several viewings, the moment where monkey number two realizes it is being screwed removes, I think, any doubt that we are of  similar stock.

Here is the director’s cut with additional material from the scientist guy:

▶ Two Monkeys Were Paid Unequally: Excerpt from Frans de Waal’s TED Talk – YouTube.

And here is one about Rat Morality, which sounds like the name of a punk band