吼猴在18个月大的时候达到性成熟，并通过舌头轻弹显示性准备。 交配和分娩可能在一年中的任何时间发生。 成熟的雌性每两年分娩一次。 对于黑吼猴而言，妊娠是180天，并产生一个后代。 出生时，雄性和雌性黑吼猴都是金发碧眼的，但雄性在两岁半时变成黑色。 在其他物种中，年轻人和成年人的颜色对于两性都是相同的。 青少年男性和女性离开父母的队伍加入无关的部队。 吼猴的平均预期寿命为15至20年。 吼猴IUCN保护状况因物种而异，从最不关心到濒危物种。 一些物种的种群趋势未知，而其他物种的种群趋势减少。 吼猴的部分范围受到保护。
澳大利亚昆士兰州生物作业代写：种群趋势
The apes achieve sexual maturity at 18 months of age and show sexual preparation through the tongue. Mating and childbirth can occur at any time of the year. Mature females give birth every two years. For black marmosets, the pregnancy is 180 days and produces a descendant. At birth, both male and female black marmosets are blond, but males become black when they are two and a half years old. In other species, the color of young people and adults is the same for both sexes. Adolescent males and females leave their parents’ ranks to join unrelated forces. The average life expectancy of apes is 15 to 20 years. The conservation status of simian IUCN varies from species to species, from least concerned to endangered species. The population trends of some species are unknown, while the population trends of other species are decreasing. Part of the range of apes is protected.