I filmed the macaques in primate park Apenheul in The Netherlands
The lip-smacking/teeth-chattering is a display of submission, but meant as a reassurance to infants. In one instance, two adults are holding an infant upside down while lip-smacking at it; this is their way of teaching the infant that showing it's back to another is also a display of submission.
Негізгі бет Barbary Macaques
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