With the establishment of national parks and preservation districts, over-capturing and overkilling of wild animals has gradually declined, and even Wu Hai-yin, a holder of a doctorate from NTU who has made a six-year study of wild Formosan Rock Monkeys, feels that the population of wild Formosan Rock Monkeys has clearly been restored.
由於國家公園與保護區的成立，濫捕、濫殺野生動物的情況逐日減少，連續八年調查台灣獼猴的中研院動物研究所博士吳海音，也明顯感覺到野外獼猴族群在恢復中。