Chimpanzee

Long term impacts of early social environment on chimpanzee white matter

Early adverse rearing conditions are known to have deleterious consequences on social behavior, cognition, and brain development of both human and nonhuman primates. We analyzed archival diffusion tensor imaging (DTI) data from mother- (MR) or nursery-reared (NR) chimpanzees and used...

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

Citation: Mulholland, M. M., Hecht, E., Wesley, M. J. et al. 2024. Long term impacts of early social environment on chimpanzee white matter. Scientific Reports 14(1), 29879.

First noncontact millimeter-wave radar measurement of heart rate in great apes: Validation in chimpanzees (Pan troglodytes)

Heart rate is a crucial vital sign and a valuable indicator for assessing the physical and psychological condition of a target animal. Heart rate contributes to (1) fundamental information for cognitive research, (2) an indicator of psychological and physical stress,...

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

Citation: Matsumoto, T., Iwata, I., Sakamoto, T. et al. 2024. First noncontact millimeter-wave radar measurement of heart rate in great apes: Validation in chimpanzees (Pan troglodytes). American Journal of Primatology 86(8), e23633.

Outdoor noncontact respiratory measurements of unrestricted rhesus macaques (Macaca mulatta) using millimeter-wave radar

Respiration is an invaluable signal that facilitates the real-time observation of physiological dynamics. In recent years, the advancement of noncontact measurement technology has gained momentum in capturing physiological activities in natural settings. This technology is anticipated to be found not...

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

Citation: Minami, T., Sanematsu, D., Iwata, I. et al. 2024. Outdoor noncontact respiratory measurements of unrestricted rhesus macaques (Macaca mulatta) using millimeter-wave radar. American Journal of Primatology 86(9), e23661.

The influence of age, sex, and season on hematological parameters in a captive population of former laboratory chimpanzees (Pan troglodytes)

This study aimed to establish a baseline hematological profile and examine the influence of age, sex, and season on hematological parameters in captive chimpanzees (Pan troglodytes) living in a humid tropical climate. Hematological parameters are a useful tool for assessing...

Year Published: 2025Topics: Welfare AssessmentAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Ngoubangoye, B., Dibakou, S.-E., Otsaghe Ekore, D. et al. 2025. The influence of age, sex, and season on hematological parameters in a captive population of former laboratory chimpanzees (Pan troglodytes). American Journal of Primatology 87(1), e23703.

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.

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.

The lasting impact of social isolation: Behavioral insights from former pet and entertainer chimpanzees in a sanctuary in Spain

Human fascination with chimpanzees has driven extensive research on the species, but also led to exploitation by private owners and entertainment industries. These animals often suffer species-specific inadequate conditions, which can result in the development and display of abnormal behaviors...

Year Published: 2025Topics: Social Housing & CompanionshipAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Chen, E., Pipolo, G., Crailsheim, D. et al. 2025. The lasting impact of social isolation: Behavioral insights from former pet and entertainer chimpanzees in a sanctuary in Spain. American Journal of Primatology 87(1), e23715.

Primate enrichment categories: A literature review of current trends

Environmental enrichment aims to enhance primate wellbeing by providing physical and mental stimuli to address the biological and psychological needs of individuals. However, lack of knowledge regarding the development of enrichment research hampers implementors and future inquiries. Therefore, a collection...

Year Published: 2024Topics: Environmental EnrichmentAnimal Type: Baboon, Capuchin, Chimpanzee, Lemur, Macaque, Marmoset, Nonhuman Primate, Other Nonhuman Primate, Owl Monkey, Squirrel Monkey, Vervet (African Green Monkey)

Citation: Richardson, S. 2024. Primate enrichment categories: A literature review of current trends. Animal Behavior and Cognition 11(1), 87–100.

Development of an animal welfare tool for zoo-housed primates, considering intra- and inter-rater reliability

Over the past few decades, the concept of animal welfare has become increasingly prominent in Western societies. Faced with this collective awareness, various organisations are now making it a point of honour to consider the welfare of their animals. This...

Year Published: 2024Topics: Welfare AssessmentAnimal Type: Baboon, Capuchin, Chimpanzee, Lemur, Macaque, Marmoset, Nonhuman Primate, Other Nonhuman Primate, Owl Monkey, Squirrel Monkey, Vervet (African Green Monkey)

Citation: Dazord, A., Primault, M. 2024. Development of an animal welfare tool for zoo-housed primates, considering intra- and inter-rater reliability. Journal of Zoo and Aquarium Research 12(2), 69–78.