, Volume 22, Issue 3, pp 393-398

The grimace and gecker: A submissive display among patas monkeys

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Observations of captive patas monkeys, plus a review of the literature, suggest that this species possesses at least three submissive/appeasement signals: (1) grimacing accompanied by a geckering vocalization; (2) cowering; and (3) a crouch face display. These findings are in contrast to earlier reports that patas monkeys have no such signals.