Riopelle, A. J. 1967. The Chimpanzee (Pan troglodytes). In: The UFAW Handbook on the Care and Management of Laboratory Animals Third Edition. UFAW [Universities Federation for Animal Welfare] (ed), 696-708. Churchill Livingstone, London, UK.

Companionship is far more important [than large cage-volume]. Isolated chimpanzees in large cages show more behavioural effects of environmental restriction than do members of pairs kept in small cages.

Year

1967