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Homosexual behaviour has been recorded in the context of both affiliative and aggressive interactions. [66] Mother orangutan with young. Unlike females of other non-human great ape species, orangutans do not exhibit sexual swellings to signal fertility. [65]
The chimpanzee Böbe painting in 1967. Primate cognition is the study of the intellectual and behavioral skills of non-human primates, particularly in the fields of psychology, behavioral biology, primatology, and anthropology.
Bornean orangutans (Pongo pygmaeus) exhibited aggression in almost 90 percent of their copulations, including when the females were not resisting. [13] A possible explanation for aggressive behaviors in primates is that it is a way for males to train females to be afraid of them and be more likely to surrender to future sexual advances. [1]
Competition and aggression. If intra-group competition becomes too high, the associated stress can potentially impose negative health impacts. [4] Cognitive capabilities. There is an assumption that cognitive abilities must be able to interpret the complex information of group living (including information resulting from social relationships). [4]
Being Human – Bridging the Gap between the Sciences of Body and Mind, Berlin VWB; Medicus, Gerhard (2017) Being Human – Bridging the Gap between the Sciences of Body and Mind. Berlin: VWB 2015, ISBN 978-3-86135-584-7; Nesse, Randolph M (2013) "Tinbergen's Four Questions, Organized," Trends in Ecology and Evolution, 28:681-682.
Infanticide in non-human primates occurs when an individual kills its own or another individual's dependent young. Five hypotheses have been proposed to explain infanticide in non-human primates : exploitation , resource competition , parental manipulation, sexual selection , and social pathology .
A wounded orangutan was seen self-medicating with a plant known to relieve pain. It's the first time an animal has been observed applying medicine to a skin injury.
Human–animal communication is the communication observed between humans and other animals, ranging from non-verbal cues and vocalizations to the use of language. [ 1 ] Some human–animal communication may be observed in casual circumstances, such as the interactions between pets and their owners, which can reflect a form of spoken, while not ...