Primate Behavior
Page 23
23)
Friendly intentions are also being communicated here by the rhesus monkey looking towards the camera. She is
lip-smacking
, an active facial expression that invites another animal to join the group.
Notes:
A group of rhesus monkeys. One animal looks toward the camera. Photo taken in a zoo enclosure.
To lip-smack, pucker up your lips, and open and close them rapidly.
Photo © by: Frans de Waal
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