Chimpanzee

Anticipation of conflict by chimpanzees

Captive chimpanzees appear to anticipate the occurrence of conflict during feeding by grooming and being in proximity at increased rates during the hours prior to feeding. The effect is more marked when food is clumped than when it is dispersed.

Year Published: 1996Animal Type: Chimpanzee, Nonhuman Primate

Citation: Koyama, N. F., Dunbar, R. I. M. 1996. Anticipation of conflict by chimpanzees. Primates 37(1), 79-86.

Goldfish as enrichment for singly housed chimpanzees

The aquarium [with a single goldfish] was attached to the outside of the chimpanzee's cage ... so that the single-caged subject was able to touch the aquarium but not the fish itself. At the conclusion of this study the authors...

Year Published: 1996Topics: Environmental EnrichmentAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Kessel, A. L., Brent, L. 1996. Goldfish as enrichment for singly housed chimpanzees. Animal Technology 47, 1-8.

Origins of abnormal behaviors in a large sample of chimpanzees (Pan troglodytes)

Associations between behavioral disorders and life history variables were examined.

Year Published: 1996Animal Type: Chimpanzee, Nonhuman Primate

Citation: Fritz, J., Nash, L. T., Howell, S. M. et al. 1996. Origins of abnormal behaviors in a large sample of chimpanzees (Pan troglodytes). Proceedings of the Congress of the International Primatological Society and Conference of the American Society of Primatologists, 765 (Abstract).

Space requirement stipulations for caged non-human primates in the United States: A critical review

Cage space requirements for non-human primates in the United States of America are less than those in European countries. Studies in support of the assumption that the US legal minimum cage size provides adequate space have limited value because they...

Year Published: 1996Topics: HousingAnimal Type: Baboon, Capuchin, Chimpanzee, Lemur, Macaque, Marmoset, Nonhuman Primate, Other Nonhuman Primate, Owl Monkey, Squirrel Monkey, Vervet (African Green Monkey)

Citation: Reinhardt, V., Liss, C., Stevens, C. 1996. Space requirement stipulations for caged non-human primates in the United States: A critical review. Animal Welfare 5(4), 361-372 .

The influence of zoo visitors on the behaviour of captive chimpanzees (Pan troglodytes)

Zoo visitors who showed conspicuous behavior in front of the enclosure were a source of stressful excitement (decrease in play behavior, increase in displacement and agonistic behaviors).

Year Published: 1996Animal Type: Chimpanzee, Nonhuman Primate

Citation: Perret, K., Preuschoft, H. 1996. The influence of zoo visitors on the behaviour of captive chimpanzees (Pan troglodytes). Primate Report 44, 36 (Abstract).

Training to reliably obtain blood and urine samples from a diabetic chimpanzee (Pan troglodytes)

Training techniques are described to gain the cooperation of a 3-year old female chimpanzee in obtaining blood and urine samples. The first blood draw occurred during the 18th training session, with a total of 275 minutes invested prior to that....

Year Published: 1996Animal Type: Chimpanzee, Nonhuman Primate

Citation: Laule, G. E., Thurston, R. H., Alford, P. L. et al. 1996. Training to reliably obtain blood and urine samples from a diabetic chimpanzee (Pan troglodytes). Zoo Biology 15, 587-591.

Inhibition of social behavior in chimpanzees under high-density conditions

The groups were observed under two conditions: 1) when they had access to both the indoor and outdoor sections of their enclosures; 2) during cold days when they were locked into the indoor runs, which reduced the available space by...

Year Published: 1997Animal Type: Chimpanzee, Nonhuman Primate

Citation: Aureli, F., de Waal, F. B. M. 1997. Inhibition of social behavior in chimpanzees under high-density conditions. American Journal of Primatology 41, 213-228.

Human interaction as enrichment for captive chimpanzees: A preliminary report

These results suggest that simple, unstructured affiliation between humans and chimpanzees has a powerful impact on well-being, promoting activity and relaxed conspecific interactions and ameliorating undesirable behaviors [e.g., abnormal behaviors].

Year Published: 1997Topics: Environmental Enrichment, Human-Animal InteractionAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Baker, K. C. 1997. Human interaction as enrichment for captive chimpanzees: A preliminary report. American Journal of Primatology 42, 92 (Abstract).

Straw and forage material ameliorate abnormal behaviors in adult chimpanzees

In an [successful] effort to reduce abnormal behaviors, especially regurgitation and reingestion, and promote higher activity levels [locomoting and playing], straw and scattered forage material were added to the enclosures of 13 indoor-housed chimpanzees living in pairs and trios.

Year Published: 1997Animal Type: Chimpanzee, Nonhuman Primate

Citation: Baker, K. C. 1997. Straw and forage material ameliorate abnormal behaviors in adult chimpanzees. Zoo Biology 16, 225-236.

Behavioral indicators of anxiety: an empirical test in chimpanzees

Behavioural, pharmacological, and physiological evidence supports an association between displacement activities and anxiety in macaques. Information is scarce in other primate and non-primate species. This study contributes to the understanding of the relation between displacement activities and emotional states by...

Year Published: 1997Animal Type: Chimpanzee, Nonhuman Primate

Citation: Baker, K. C., Aureli, C. F. 1997. Behavioral indicators of anxiety: an empirical test in chimpanzees. Behaviour 134, 1031-1050.