Furthermore, low-ranking males can sometimes avoid direct competition with dominant individuals by sneaking copulations, as occurs in Japanese and rhesus macaques

Subordinate males often like to mate in secret, out of the alpha male's sight. If an alpha male catches a coital couple, he may execute a "bluff display," where he charges at the pair, Darby Proctor, a primatologist at Emory University, told LiveScience.