Results 21 to 30 of about 34,442 (247)
Neural representation of face familiarity in an awake chimpanzee [PDF]
PeerJ, 2013 Evaluating the familiarity of faces is critical for social animals as it is the basis of individual recognition. In the present study, we examined how face familiarity is reflected in neural activities in our closest living relative, the chimpanzee. Skin-
Hirokata Fukushima +9 more
doaj +2 more sources
Animals, 2023 A survey was sent to zoos, research facilities, and sanctuaries which housed chimpanzees. Data collected included information about 1122 chimpanzees’ age, sex, social group-size, rearing history, and enclosure.
Andrea W. Clay +10 more
doaj +1 more source
Urinary Cortisol, Aggression, Dominance and Competition in Wild, West African Male Chimpanzees
Frontiers in Ecology and Evolution, 2019 High dominance status is associated with fitness benefits in many social mammals. Yet, attaining and maintaining a high social status often comes with elevated energetic costs.
Anna Preis +8 more
doaj +1 more source
Sign Language Studies with Chimpanzees in Sanctuary
Animals, 2023 Adult chimpanzees Tatu and Loulis lived at the Fauna Foundation sanctuary. They had acquired signs of American Sign Language (ASL) while young and continued to use them as adults.
Mary Lee Jensvold +2 more
doaj +1 more source
Innovation in chimpanzees [PDF]
Biological Reviews, 2020 ABSTRACTThe study of innovation in non‐human animals (henceforth: animals) has recently gained momentum across fields including primatology, animal behaviour and cultural evolution. Examining the rate of innovations, and the cognitive mechanisms driving these innovations across species, can provide insights into the evolution of human culture ...
Elisa Bandini, Rachel A. Harrison
openaire +3 more sources
Behavioural Development of Three Former Pet Chimpanzees a Decade after Arrival at the MONA Sanctuary
Animals, 2022 Chimpanzees used as pets and in the entertainment industry endure detrimental living conditions from early infancy onwards. The preferred option for ending their existence as pet or circus chimpanzees is their rescue and transfer to a primate sanctuary ...
Olga Feliu +5 more
doaj +1 more source
Atypical experiences of captive chimpanzees (Pan troglodytes) are associated with higher hair cortisol concentrations as adults [PDF]
Royal Society Open Science, 2017 Experiences during early development are influential on the lives of human and non-human primates into adulthood. The population of captive chimpanzees in the USA can provide insight into this relationship, as collectively they have experienced a wide ...
S. L. Jacobson +3 more
doaj +1 more source
Bystanders intervene to impede grooming in Western chimpanzees and sooty mangabeys [PDF]
Royal Society Open Science, 2017 Grooming interactions benefit groomers, but may have negative consequences for bystanders. Grooming limits bystanders' grooming access and ensuing alliances could threaten the bystander's hierarchy rank or their previous investment in the groomers.
Alexander Mielke +5 more
doaj +1 more source
Play-solicitation gestures in chimpanzees in the wild: flexible adjustment to social circumstances and individual matrices [PDF]
Royal Society Open Science, 2016 Social play is a frequent behaviour in great apes and involves sophisticated forms of communicative exchange. While it is well established that great apes test and practise the majority of their gestural signals during play interactions, the influence of
Marlen Fröhlich +2 more
doaj +1 more source
Frontiers in Ecology and Evolution, 2022 Multibody dynamic analysis (MDA) has become part of the standard toolkit used to reconstruct the biomechanics of extinct animals. However, its use is currently almost exclusively limited to steady state activities such as walking and running at constant ...
William Irvin Sellers +4 more
doaj +1 more source