Other Nonhuman Primate

Monitoring great ape heart health through innovative electrocardiogram technology: Training methodologies and welfare implications

Assessing and treating cardiovascular disease (or heart disease) is a growing concern for institutions housing great apes, as it is a major cause of mortality in all four taxa managed in human care. As part of a proactive monitoring plan,...

Year Published: 2020Topics: Biological Sampling & Physiological Measurement, Welfare AssessmentAnimal Type: Chimpanzee, Nonhuman Primate, Other Nonhuman Primate

Citation: Cloutier Barbour, C., Danforth, M. D., Murphy, H. et al. 2020. Monitoring great ape heart health through innovative electrocardiogram technology: Training methodologies and welfare implications. Zoo Biology 39(6), 443-447.

An Enrichment Device for Great Apes

The influence of an environmental enrichment feeding device (puzzle feeder), on activity and behaviour patterns of captive orang-utans, gorillas and chimpanzees was studied at London Zoo. General activity levels and behaviours directed towards the feeder increased for all species when...

Year Published: 1992Topics: Environmental EnrichmentAnimal Type: Chimpanzee, Nonhuman Primate, Other Nonhuman Primate

Citation: Gilloux, I., Gurnell, J., Shepherdson, D. 1992. An Enrichment Device for Great Apes. Animal Welfare, 1(4), 279–289.

Howletts and Port Lympne Zoo Parks, UK, Summer 1990 – Summer 1991

Several structural enrichment enhancers are described. When a barrel with an opening in the front was hung from the roof of the siamang enclosure, our then solitary male, Mitch, spent much of his time looking out at the world from...

Year Published: 1992Topics: Environmental Enrichment, Rearing & Weaning, ReproductionAnimal Type: Nonhuman Primate, Other Nonhuman Primate

Citation: Anonymous. 1992. Annual Reports: Howletts and Port Lympne Zoo Parks, UK. International Zoo News 39(1), 30-41.

Review of depressive-like behaviours in some group-living mammals

Thanks to animal models of depression, we are getting closer to understand the nature of this disorder in humans – but depressive disorders may not be specific only to humans. Although due to the inability to collect a verbal report...

Year Published: 2025Topics: Emotion, Pain, & SentienceAnimal Type: Baboon, Capuchin, Chimpanzee, Equine, Gibbon, Lemur, Macaque, Marine Mammal, Marmoset, Nonhuman Primate, Other Animal, Other Nonhuman Primate, Owl Monkey, Squirrel Monkey, Vervet (African Green Monkey)

Citation: Ilmer, I., Smoleń, T. 2025. Review of depressive-like behaviours in some group-living mammals. Applied Animal Behaviour Science 292, 106753.

Behavior and safety in the use of canopy bridges by howler monkeys in an experimental environment

Urban sprawl advances over forested areas and threatens arboreal species, which often use roads, power lines, and rooftops to move, resulting in roadkill, electrocution, and dog attacks. One measure to mitigate these risks is the installation of canopy bridges, which...

Year Published: 2025Topics: Environmental Enrichment, HousingAnimal Type: Nonhuman Primate, Other Nonhuman Primate

Citation: Dias, P., Teixeira, F. Z., Ferrugem, V. H. C. et al. 2025. Behavior and safety in the use of canopy bridges by howler monkeys in an experimental environment. Applied Animal Behaviour Science 290, 106696.

The effects of artificial UV-B provision on positional sleeping behaviour and vitamin D3 metabolites of captive aye-ayes (Daubentonia madagascariensis)

Zoological environments aim to promote natural behaviours and optimal welfare conditions. Over the past decade, research on the use of artificial ultraviolet-B (UV-B) exposure has improved vitamin D3 levels and reduced incidences of metabolic bone disease in diurnal primates; however,...

Year Published: 2025Topics: Husbandry & ManagementAnimal Type: Nonhuman Primate, Other Nonhuman Primate

Citation: Walker, D., Bwye, P., Richdon, S. 2025. The effects of artificial UV-B provision on positional sleeping behaviour and vitamin D3 metabolites of captive aye-ayes (Daubentonia madagascariensis). Journal of Zoological and Botanical Gardens 6(3), 39.

Affective responses and behavioral strategies to social fusion events in zoo-housed bonobos

Species with fission-fusion dynamics may face heightened social tension during fusion events due to relationship insecurity and competition over resources. Affective consequences of such events are important determinants for behavioral responses, yet remain poorly understood. To evaluate the affective consequences...

Year Published: 2025Topics: Natural Behavior, Social Housing & CompanionshipAnimal Type: Nonhuman Primate, Other Nonhuman Primate

Citation: Laméris, D. W., Verspeek, J., Salas, M. et al. 2025. Affective responses and behavioral strategies to social fusion events in zoo-housed bonobos. Animal Behavior and Cognition 12(3), 300–329.

Mental Health and Well-being in Animals

Since the publication of the first edition of this book, professional and public concern for the well-being of animals has continued to increase throughout the world. Advances in research and technologies have yielded an enormous amount of new knowledge about...

Year Published: 2025Topics: Emotion, Pain, & Sentience, Welfare AssessmentAnimal Type: All/General, Baboon, Bird, Capuchin, Cat, Chicken, Chimpanzee, Crocodile & Alligator, Dog, Equine, Fish, Gibbon, Goat, Lemur, Lizard, Macaque, Marmoset, Nonhuman Primate, Other Animal, Other Nonhuman Primate, Owl Monkey, Parrot, Pig, Rabbit, Reptile, Salmon, Sheep, Snake, Squirrel Monkey, Trout, Turtle & Tortoise, Vervet (African Green Monkey)

Citation: McMillan, F. D. (Ed.) 2025. Mental Health and Well-being in Animals (3rd ed.). CAB International, Oxfordshire, UK. 464 p.

Should zoo food be chopped for ruffed lemurs? It’s not so black and white

Whole food diets in zoos have the potential to reduce microbial contamination and keeper preparation time, whilst also reducing food nutrient breakdown. Given these benefits, it is important to determine whether there is any value in chopping up food. Lemurs...

Year Published: 2025Topics: Husbandry & ManagementAnimal Type: Nonhuman Primate, Other Nonhuman Primate

Citation: Davison, J. M., Hammond, A., Abernethy-Palmer, G. et al. 2025. Should zoo food be chopped for ruffed lemurs? It’s not so black and white. American Journal of Primatology 87(2), e23695.

The provision of browse and its impacts on the health and welfare of animals at the zoo: A review

Browsers are animals that consume significant proportions of leaves, twigs, and bark from woody plants. These species have evolved morphological, physiological, and behavioral adaptations to subsist on a specialized diet. In zoos and other managed care facilities, the provision of...

Year Published: 2025Topics: Environmental Enrichment, Husbandry & ManagementAnimal Type: Chimpanzee, Nonhuman Primate, Other Animal, Other Nonhuman Primate

Citation: Ramont, M., Principe, N., Prostko, R. et al. 2025. The provision of browse and its impacts on the health and welfare of animals at the zoo: A review. Zoo Biology 44(2), 105–125.