Samuni et al. studied two neighboring groups of bonobos – the Ekalakala and the Kokoalongo – with overlapping home and hunting ranges. However, despite these overlaps, and multiple encounters between the two groups, members of the Ekalakala group almost exclusively hunted for anomalures, whereas members of the Kokoalongo group mostly hunted for squirrels and duikers. This still, from a video recorded by Samuni et al., shows a member of the Kokoalongo group holding a duiker it has captured. Samuni et al. suggest that the difference in prey preferences between the two groups is due to cultural factors.