Manipulation of objects in a captive group of lion-tailed macaques (Macaca silenus) (1987)

Westergaard, G. C., Lindquist, T.

Abstract

The animals frequently manipulated simple objects [browse and bamboo poles] that were provided in their home cage. They engaged in a variety of goal-oriented manipulative activities [e.g., to apply leverage, to create perches and ladders], with some instances involving joint action or social use.