The golden snub-nosed monkey is a highly social primate, forming units of 20 to 30 individuals in winter, which often come together into larger troops of up to 200 in the summer (3). Several of these groups may in turn combine temporarily to form enormous bands of up to 600 (3). These larger groups are sub-divided into smaller family units comprising of one dominant male and around four females with their young (2). Most activity occurs in the trees, but some feeding may take place on the ground (2). When threatened, the golden snub-nosed monkey takes refuge by climbing very quickly high up into the trees. It feeds mainly on pine needles and young firs, but may also eat bamboo shoots, leaves, buds and fruits (2).
Although golden snub-nosed monkeys display mating behaviour throughout the year, most births tend to occur between March and May (2) (5). Most matings are solicited by the female, who signals her readiness to mate with a number of signals and postures (5). One young is normally produced after an estimated gestation period of around six months (5), although occasionally two infants may be produced (2). It is the mother that provides most of the infant’s care, although other male and female members of the group are also protective over the young infant (5). Sexual maturity is attained at seven years in males and four to five years in females (2).