There are tons of articles about monkeys routinely eating fermented fruits, so advanced brains aren't required for that. E.g. https://news.berkeley.edu/2022/03

There are tons of articles about monkeys routinely eating fermented fruits, so advanced brains aren't required for that. E.g. https://news.berkeley.edu/2022/03/30/monkeys-routinely-eat-fruit-containing-alcohol-shedding-light-on-our-own-taste-for-booze/ https://news.berkeley.edu/2022/03/30/monkeys-routinely-eat-f...