Monkeys are smart and active by nature, and they are closest to people, so Feng Shui does not list them as auspicious animals.
Monkeys are auspicious animals, and monkeys are more blessed when they meet mice. They can put mice, money kangaroos and mice in treasure, they can put them in the north, and they can get closer to people who belong to mice. Solemnly declare: the answer is for reference only, please don't be blindly superstitious.