, Volume 37, Issue 3, pp 253-259

Preliminary report on predatory behavior and meat sharing in tschego chimpanzees (Pan troglodytes troglodytes) in the Ndoki forest, northern Congo

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Predatory behavior ofPan t. troglodytes in the Ndoki Forest was confirmed by both direct observation and fecal evidence. Eight out of 214 fecal samples (3.7%), collected during 16 months, contained vertebrate tissue. The prey species were a terrestrial bird, two monkey species including crowned guenon, a squirrel, and probably a pangolin. This rate suggested that predation in the Ndoki population can occur as frequently as in other populations. Chimpanzees were also directly observed to eat an infant crowned guenon, a hornbill, and a duiker. An adult female used a branch apparently in an attempt to drive out a hornbill from its nest hole, though no bird was observed to come out. Chimpanzees were attracted to meat, and were observed begging and sharing over the meat. Predatory behavior is common toPan andHomo, but not toGorilla, implying that the common ancestor of the former two genera acquired this behavior after separating from gorillas.