Citation needed. We are monkeys with drugs and guns. Any attempt to deny that basic premise is doomed to failure.
We deny that basic premise every day by building and maintaining a civilisation.
Groundhogs, dolphins, whales, monkeys (other 'great primates'), etc, all have a regular social order with shared/close living quarters. Just because they don't have specious (pun intended) arguments with strangers over an electronic communications network doesn't mean they aren't some value of 'civilized'.