Captive chimpanzees may unite against a common enemy

Captive chimpanzees may unite against a common enemy, being more likely to show cohesive behaviors (e.g.: physical closeness, play) when they hear recorded calls of unknown chimps.

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Article Title: Uniting against a common enemy: Perceived outgroup threat elicits ingroup cohesion in chimpanzees

Funding: This research was financially supported by the Leading Graduate Program in Primatology and Wildlife Science of Kyoto University, and JSPS Grant-in-Aid for Scientific Research (KAKENHI 17H05862 and 19H00629 to SY). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Competing Interests: The authors have declared that no competing interests exist.

Article URL: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0246869