Cognitive enrichment: Problem solving abilities of captive white-bellied spider monkeys (1998)

Citrynell, P.

Abstract

The influence of a puzzle box feeder, as a cognitive enrichment device, on the activity and behaviour patterns of a population of four white-bellied spider monkeys (Ateles belzebuth belzebuth) was studied at Bristol Zoo. ... It is suggested that the use of appropriate puzzle feeders can improve the welfare of these animals.