Reinhardt, V. 1994. Effective environmental enrichment for caged rhesus macaques. In Touch 1(2), 1 & 3-5.
The animals spent approximately 20% of the [day] time interacting with the companion, 10% perching on the PVC pipe, 4% gnawing/manipulating the branch segment and 7% foraging for primary food.
Year
1994
Animal Type