Unlike other male primates, male hapalines generally provide as much parental care as females, more in some cases.

Like other young male primates, they learn to get along through rough-and-tumble play.

Testosterone appears to be a major contributing factor to sexual motivation in male primates, including humans.

They don't even bother to form itinerant bachelor bands, as many male primates do.

Unfortunately, male primates have the same two goals; they want control over female reproduction too.

Unlike other male primates, male callitrichids generally provide as much parental care as females.

Behavioral and biological evidence suggests that sexual selection is an intense force on male primates, and that the intensity might vary with the social system.

Most male primates have a baculum, but it is typically larger in strepsirrhines and usually forked at the tip.