Females reach "marriageable" age at five years. Five to six years is also the time after which a dominant male is ready to retire and be replaced by a new troupe leader, and in this way inbreeding is avoided.
母猴進入「適婚年齡」後，此時稱王五、六年的公猴也年屆退休，由新猴王取代，如此避免了近親繁殖的厄運。