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Social play involves one of the most sophisticated types of communication, that is, the use of play signals. Most primate research on play signals has focused on the use of the play face. However, some species appear to exhibit a variety of play signals. For example, rhesus monkeys (Macaca mulatta) have been reported to use body movements or postures that might have signal value during social play,...
To clarify the social functions of play panting in chimpanzees, I investigated when they emitted play panting in social play and how the interactions were affected by the occurrence of play panting. The subjects were the M-group chimpanzees living in Mahale, Tanzania. The following observations were made: (1) chimpanzees emitted play panting when they were tickled or chased but rarely did so when...
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