Individual and social behavior in a captive troop of mandrills (mandrillus sphinx)

Little is known about the behavior of mandrills in the wild, and few captive studies have been conducted. Individual and social behaviors of six captive mandrills were categorized and quantified. The captive troop consisted of one adult male, two adult females and three infants. Behavioral categories were constructed during 150 hr of preliminary observations. One hundred and sixty-seven hours of quantitative data were collected over an eight-month period. Although much of the mandrill's behavioral repertoire is similar to Papio , some facial expressions, body postures and various social behaviors were found to be unique.