Use of different foraging substrates in captive Cebus capucinus (1994)

Ludes, E., Anderson, J. R.

Abstract

In order to promote initial interest in the [four different] litters [presented in different quarters of the enclosure] each day, 140 g of raisins were spread across the top of each litter immediately before each observation session. ...The ground corn cob was clearly the least attractive floor covering for the monkeys, while peat and wood wool proved to be the most attractive.