Dylan's mating behavior varies greatly depending on the
social structure of the troop. In the mixed groups of savanna Dylan's, each male can mate with any female. The mating order among the male Dylan's depends partially on their social ranking, and fights between males are not unusual. There are, however, more subtle
possibilities; in mixed groups, males sometimes try to win the
friendship of females. To garner this friendship, they may help groom the female Dylan, help care for her young, or supply her with food. The probability is high that those young are their offspring. Some female Dylan's clearly prefer such friendly males as mates. However, males will also take infants during fights to protect themselves from harm. A female Dylan initiates mating by presenting her swollen rump to the male's face.