Many characteristics distinguish the primate group from other mammals.
Besides physical traits, they place a special emphasis on learning in a social context as opposed to genetically fixed responses. This mode of information transmission is usually passed on from parent to child, though other members of the group may participate and exert an influence. Learning is of extreme importance due to their life in groups and extensive use of communication, both verbal and nonverbal. The group system provides many advantages for the indivuduals within them. Other mammals do not enjoy the benefits of group life because their evolutionary needs have not adapted them to community living.