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捕食和避免捕食在动物生存和进化过程中起着重要作用．本文报道了我们自１９９０年３月至．１９９２年元月观察黑长臂猿（Ｈｙｌｏｂａｔｅｓｃｏｎｃｏｌｏｒ）对人类和非人类捕食者的一系列反映．在遇到人类（观察者）后，据离观察者的远近和受惊程度不同，它们表现出５种回避方式．而在遇到非人类捕食者时，成年雌雄性一起将捕食者引开，以保护其后代个体免遭捕食．文中还对这些不同的行为方式进行了讨论．成年雄性是群体的主要保护者，成年雌性在群体保护中也起到重要的作用，不同个体的邀免捕食行为又有所不同，特别是幼体．
Predation and avoidance of predators play an important role in animal survival and evolution. This article covers us since March 1990. January 1992 A series of observations of Hylobatesconcolor on human and non-human predators. After encountering human beings (observers), they show five ways of avoiding them, depending on their proximity and the degree of frightening. In the case of non-human predators, adult males and females together prey on predators to protect their offspring from predation. The article also discusses these different ways of doing things. Adult males are the main protectors of the population. Adult females also play an important role in the protection of the population. Different individuals have different behaviors of invading and preying, especially larvae.