"The natural environment is always changing. Even if the number of monkeys has been increasing in the short term, there are so many uncertain factors that it is very hard to say that their populations will grow in the long term." Wu Hai-yin is the first biologist to have written a doctoral thesis about Formosan rock monkeys.
「自然環境是變動的，即使短期內獼猴數量成長，但不確定因素太多，長期來看，很難說猴群增多，」吳海音是第一位以台灣獼猴寫博士論文的生物學者。