The golden snub-nosed monkey is found in groups ranging in size from 5-10 individuals to bands of about 600.[5] The social organization of this species can be quite complex. The one-male-units (OMUs) are the basic social unit within groups of golden snub-nosed monkeys with many of the OMUs forming a bigger group. These multi-tier societies consist of several OMUs that include one adult male plus a number of adult females and their offspring.