Nonhuman Primate

Evaluating indicators of wellbeing in captive grey mouse lemurs, Microcebus murinus, in the context of enrichment

Developing and implementing effective approaches to improve the welfare of animals participating in research requires reliable monitoring of their wellbeing. Since wellbeing is a multidimensional state that relates to an individual's physiological, behavioural and psychological/mental health, assessing it requires the...

Year Published: 2024Topics: Environmental EnrichmentAnimal Type: Lemur, Nonhuman Primate

Citation: Perea-Rodriguez, J. P., Ferreira, J., Anzeraey, A. et al. 2024. Evaluating indicators of wellbeing in captive grey mouse lemurs, Microcebus murinus, in the context of enrichment. Animal Behaviour 218, 121–134.

Applying an eye tracking technique to gibbons: First study using scanpath measurements for visual stimuli

Compared to the abundance of research on cognition in various nonhuman primate species, studies of gibbons -- often called “the small apes” -- remain limited, despite the importance of gibbons for understanding evolutionary processes in humans and other apes. Over...

Year Published: 2024Topics: Behavioral & Cognitive TestingAnimal Type: Gibbon, Nonhuman Primate

Citation: Uchikoshi, M., Yu, L., Hattori, Y. 2024. Applying an eye tracking technique to gibbons: First study using scanpath measurements for visual stimuli. Behavioural Processes 221, 105080.

Teeth baring as a model to understand complex facial signals in a tolerant macaque species

Facial communication regulates many aspects of social life in human and nonhuman primates. Empirically identifying distinct facial expressions and their underlying functions can help illuminate the evolution of species' communicative complexity. We focused on bared-teeth faces (BTFs), a highly versatile...

Year Published: 2025Topics: Natural BehaviorAnimal Type: Macaque, Nonhuman Primate

Citation: Fantoni, F., Maglieri, V., Giusti, N. et al. 2025. Teeth baring as a model to understand complex facial signals in a tolerant macaque species. American Journal of Primatology 87(1), e23697.

Novel scent enrichment enhances socio-sexual and olfactory behaviors in zoo-housed gentle lemurs

The Alaotran gentle lemur (Hapalemur Alaotrensis) is one of the most endangered primates in the world and shows a low success rate in captive breeding programmes. We tested a novel scent enrichment, made up of a synthesized mixture likely conveying...

Year Published: 2025Topics: Environmental EnrichmentAnimal Type: Lemur, Nonhuman Primate

Citation: Fontani, S., Glendewar, G., Cowen, R. et al. 2025. Novel scent enrichment enhances socio-sexual and olfactory behaviors in zoo-housed gentle lemurs. American Journal of Primatology 87(1), e23716.

Chimpanzee activity and behavioral diversity extends across 24 hours in both captive and wild settings

Studying nocturnal behavior is crucial for understanding the full scope of a species' behavioral flexibility so as to inform the conservation of wild populations and the care of captive individuals. However, this aspect of primate behavior is understudied, especially in...

Year Published: 2025Topics: Natural BehaviorAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Funkhouser, J. A., Boostrom, H., Hellmuth, H. et al. 2025. Chimpanzee activity and behavioral diversity extends across 24 hours in both captive and wild settings. American Journal of Primatology 87(1), e23729.

Measuring heart rate in captive chimpanzees without anesthesia

Heart rate measurements can be useful for the monitoring of both physical and mental condition in humans and nonhuman animals. Yet, information about heart rates in chimpanzees, who are phylogenetically the closest species to humans, is scarce. Existing data on...

Year Published: 2024Topics: Biological Sampling & Physiological MeasurementAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Hirata, S., Nogami, E., Udono, T. 2024. Measuring heart rate in captive chimpanzees without anesthesia. Primates 65(4), 217–222.

Positive reinforcement-based magnet training permits social housing in catheterized squirrel monkeys

Background: Non-human primates play a critical role in neuroscience research. Though they are social animals, laboratory study requirements can sometimes require single housing and thereby prevent social housing. New Method: To eliminate single housing and promote well-being within our squirrel...

Year Published: 2025Topics: Animal TrainingAnimal Type: Nonhuman Primate, Squirrel Monkey

Citation: Johansen, A. N., Figueroa-Monsanto, H. L., Hecker, J. C. et al. 2025. Positive reinforcement-based magnet training permits social housing in catheterized squirrel monkeys. Journal of Neuroscience Methods 413, 110313.

Pairing laboratory-housed adult male rhesus macaques (Macaca mulatta): Success rates in relation to behavioral response and duration of visual contact

While the benefits of pair housing have been well documented, less is known about increasing success in adult male macaque pair introductions. In this retrospective study, 95 unfamiliar adult male macaque (Macaca mulatta) pairs were examined to determine whether duration...

Year Published: 2024Topics: Social Housing & CompanionshipAnimal Type: Macaque, Nonhuman Primate

Citation: Logan, L. E., Sayers, K. 2024. Pairing laboratory-housed adult male rhesus macaques (Macaca mulatta): Success rates in relation to behavioral response and duration of visual contact. Applied Animal Behaviour Science 277, 106340.

The impact of care on chimpanzee welfare: A comprehensive review

Animal welfare research has increased dramatically in scope and prevalence, spanning zoos, aquariums, sanctuaries, and research facilities. Chimpanzees are the most common and well-studied great ape living in human care. This considerable focus on chimpanzee welfare provides the foundation for...

Year Published: 2024Topics: Environmental Enrichment, Social Housing & CompanionshipAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Angley, L. P., Vale, G. L., Cronin, K. A. 2024. The impact of care on chimpanzee welfare: A comprehensive review. Applied Animal Behaviour Science 275, 106272.

Effect of rehabilitation exercise on locomotion performance of captive Bengal slow loris

The Bengal slow loris (Nycticebus bengalensis) is one of the most confiscated and rescued primate species in China. These animals are often subject to physical issues due to poor husbandry practices in captivity. Many individuals rescued from the illegal wildlife...

Year Published: 2024Topics: Relocation & TransportAnimal Type: Nonhuman Primate, Other Nonhuman Primate

Citation: Bolin, X., Linhong, L., Dongchen, H. et al. 2024. Effect of rehabilitation exercise on locomotion performance of captive Bengal slow loris. Applied Animal Behaviour Science 276, 106304.