Actually, some monkeys develop alcohol dependence in the wild (they get their alcohol from ripe fermenting fruits).

Source: http://www.independent.co.uk/environment/nature/chimpanzees-...

Here's also an extract from a BBC Nature documentary: https://www.youtube.com/watch?v=pSm7BcQHWXk

Apparently, the monkeys are divided among heavy drinkers, occasional drinkers or teetootalers in proportions that are roughly equal to those among human beings.