Previous research has suggested that chimpanzees (Pan troglodytes) display higher levels of aggression in captivity than in the wild. One of the challenges of captive management, therefore, is to balance the chimpanzees' need for social...
These mounds (6 x 4 x 4 ft.) are small enough to fit inside the entrance to the outdoor play yard, yet large enough to prevent the mound from tipping over with several animals on...
The [ice] blocks provide a stimulating foraging experience for the NHPs. The blocks last up to an hour fully melting; however, most NHPs have them broken apart and are eating them within 15 minutes. Some...
Animal care for nonhuman primates (NHPs) in biomedical facilities has undergone major changes in the past few decades. Today, most primate facilities have dedicated and highly trained animal care technicians who go to great efforts...
At the Yerkes National Primate Center we have developed a system for behavioral assessment that includes these elements: frequent observation of behavior for all primates with a check sheet-type record; a quantitative system for recording...
We used four years of detailed data on where 23 great apes (chimpanzees and gorillas) positioned themselves within a modern, indoor/outdoor zoo enclosure to determine not only how the apes utilized their space but also...
Training captive nonhuman primates to voluntarily participate in a variety of necessary research and medical procedures is a valuable refinement in the management of captive primates. For the purposes of this talk, training programs require...
The racks provide four different levels of horizontal bars where manipulanda can be hung. .. The racks are positioned in front of a 4-caged housing system. .. The enrichment racks have produced an increase in...
In captive research environments for nonhuman primates (NHP), social housing strategies are often in conflict with protocols designed to minimize disease transmission. This is particularly true in breeding colonies, and is especially relevant when attempting...
There is a general consensus among those studying the welfare of captive primates that social housing is the most effective means for promoting psychological well-being. It is well established that socially-housed rhesus macaques (Macaca mulatta)...