Behavior in chimpanzees. Medical search. Frequent questions

A Chimpanzee jumps at a glass screen as primatologist Dr. Jane Goodall holds a press conference at Taronga Zoo July 14, 2006 in Sydney, Australia. (huffpost.com)
Dr. Jane Goodall , an authority on chimpanzee behavior, agrees. (crosswalk.com)
For every moviegoer who sees Chimpanzee during the film's opening week (April 20-26, 2012), Disneynature will make a donation to the Jane Goodall Institute through the Disney Worldwide Conservation Fund. (crosswalk.com)
JANE GOODALL continues to study and write about primate behavior. (copperfieldsbooks.com)
She founded the Gombe Stream Research Center in Gombe National Park, Tanzania, and the Jane Goodall Institute for Wild Life Research, Education, and Conservation to provide ongoing support for field research on wild chimpanzees. (copperfieldsbooks.com)
I wasn't particularly interested in Chimpanzees as a model, or a close relative of humans but simply because they're a fascinating species and it was a very lucky time because Jane Goodall was looking for people to help her in her study, so I wrote to her and in three months later, I think I was in Western Tanzania at her site in Gumby. (bigthink.com)
An overwhelming majority of wild field studies focused on eastern chimpanzees ( Pan troglodytes schweinfurthii ), the subspecies of chimpanzee first studied by Jane Goodall at Gombe in Tanzania (e.g. (4apes.com)

Anthroponotic (i.e., of human origin) respiratory viruses have caused notable mortality rates in wild chimpanzee populations ( 11 - 14 ), and molecular testing of both postmortem and noninvasive (fecal) samples from wild apes during respiratory disease outbreaks have implicated human paramyxoviruses (family Paramyxoviridae ) as anthroponotic causes ( 11 - 14 ). (cdc.gov)
Nearly all chimpanzee populations have been recorded using tools, modifying sticks, rocks, grass and leaves and using them for hunting and acquiring honey, termites, ants, nuts and water. (wikipedia.org)
Existing chimpanzee populations in West and Central Africa do not overlap with the major human fossil sites in East Africa, but chimpanzee fossils have now been reported from Kenya. (wikipedia.org)
Even more excitingly for conservation, due to its relatively wide and continuous distribution within the country, the chimpanzee population of Liberia is also probably one of most viable chimpanzee populations in West Africa, making it a regional conservation priority. (sciencedaily.com)
The simple reason for this is that the virus has burned its way through chimpanzee populations for thousands of years, a long enough time for the virions which do not kill their host, at least not quickly, to outcompete the most lethal strains. (balloon-juice.com)
Chimpanzees are more territorial than bonobos and in some populations engage more frequently in group hunts. (mpg.de)
What if I told you there were populations of chimpanzees that made spears to hunt, lived in caves, and loved playing in water? (4apes.com)
However, recent research has revealed that there are populations of western chimpanzees ( Pan troglodytes verus ) that engage in all of these behaviours, and it is challenging our current understanding of chimpanzee taxonomy. (4apes.com)
Habituation is the process of conditioning an animal to behave neutrally to a human's presence, and as I discovered on two recent field surveys in Cameroon, behavioral studies are impossible to conduct on unhabituated populations of chimpanzees. (4apes.com)
Despite all of these problems, eastern chimpanzees were the first subspecies habituated, while most other populations remained unhabituated, thus creating the East African chimp bias. (4apes.com)
They live in a woodland-savanna mosaic environment, which is atypical because most known populations of chimpanzee live in a forested environment. (4apes.com)

Bonobos have gotten a lot of attention for their sexual behavior , particularly their wide range of sociosexual behavior, behaviors involving sexuality that do not involve conceptive sex and occur across ages and partners. (prosocial.world)
For example, one 2016 paper on observations of homosexual behavior in female gorillas summarized the literature as "Same-sex sexual behavior exists in all great apes: it is common and varied among bonobos, but rare or absent among chimpanzees, and orangutans. (prosocial.world)
Bonobos are equally related to us, but chimpanzees are better studied due to their wider geographic distribution, and higher numbers in captivity. (prosocial.world)
then bonobos split from the common chimpanzee line about 2 million years ago. (wikipedia.org)
Although same-sex sexual behaviour is habitual and particularly pronounced among bonobos (de Waal, 1990), chimpanzees ( Pan troglodytes ) are also know to engage in same-sex sexual behaviour across multiple contexts (Savage-Rumbaugh & Wilkerson, 1978). (brill.com)
Scientists investigated cooperation dynamics in wild chimpanzees (Taï, Ivory Coast) and bonobos (LuiKotale, DCR) using a snake model. (mpg.de)
While chimpanzees cooperate to defend their territory, bonobos do not. (mpg.de)
The study reveals no differences in both species' social intelligence but supports theories linking territoriality and in-group cooperation in humans since chimpanzees were more motivated to cooperate by informing others of a threat as compared to bonobos. (mpg.de)
Chimpanzees arriving later at the snake were better informed and therefore less surprised to see it in this place than bonobos arriving later. (mpg.de)
To test this hypothesis, researchers from the Max Planck Institute for Evolutionary Anthropology, Harvard University and Liverpool John Moores University, presented 82 chimpanzees and bonobos from five different communities with a model of a Gaboon viper, a deadly snake. (mpg.de)
In this study, researchers show that both chimpanzees and bonobos can assess what others know, as they stopped calling when all individuals around had seen the snake. (mpg.de)
However, chimpanzees warned each other more efficiently: individuals arriving later at the snake were less surprised upon seeing it than late arriving bonobos. (mpg.de)
This suggests chimpanzees were better informed of the snake's presence than bonobos. (mpg.de)
Indeed, late arriving chimpanzees were more likely to hear a call before reaching the snake than bonobos in the same circumstance, suggesting that the motivation to help and warn others was higher in chimpanzees. (mpg.de)
The authors confirm that chimpanzees may have some awareness of others' knowledge and demonstrate for the first time this ability in wild bonobos. (mpg.de)
On the contrary, chimpanzees in Uganda and bonobos in DR Congo, do not live in isolation and have developed sophisticated gestural repertoires that they use to communicate. (frontiersin.org)
It seems that the basic capacities for negotiating over conflicting interests probably arose before we split from our last common ancestor with chimpanzees and bonobos," Melis and her colleagues write. (newscientist.com)

Genotyping of 41 chimpanzees and examination of 24 published chimpanzee genomes from subspecies across Africa showed universal homozygosity for the cadherin-related family member 3 CDHR3 -Y 529 allele, which increases risk for rhinovirus C infection and asthma in human children. (cdc.gov)
Four subspecies of the chimpanzee have been recognised, with the possibility of a fifth: Central chimpanzee or the tschego (Pan troglodytes troglodytes), found in Cameroon, the Central African Republic, Equatorial Guinea, Gabon, the Republic of the Congo, and the Democratic Republic of the Congo, with about 140,000 individuals existing in the wild. (wikipedia.org)
The census revealed that this country is home to 7000 chimpanzees and therefore to the second largest population of the Western subspecies of chimpanzees. (sciencedaily.com)
Western chimpanzees are currently understood as one of four subspecies of chimpanzee. (4apes.com)
The other three subspecies are eastern chimpanzees ( Pan troglodytes schweinfurthii ), central chimpanzees ( Pan troglodytes troglodytes ), and Cameroon-Nigeria chimpanzees ( Pan troglodytes ellioti ). (4apes.com)
Until recently, scientists knew very little about chimpanzee subspecies variation. (4apes.com)
Studies of this subspecies primarily informed our scientific understanding of wild chimpanzee behaviour and ecology. (4apes.com)
Recent primatological research on western chimpanzees has revealed behaviors never before observed in other subspecies. (4apes.com)
These discoveries have forced scientists to rethink behavioral variation among chimpanzee subspecies because eastern chimpanzees have never been observed to behave in any of those ways (Pruetz, 2009). (4apes.com)

Risk-taking behavior in both adolescent chimpanzees and humans appears to be deeply biologically ingrained, but increases in impulsive behavior may be specific to human teens, Rosati said. (homeword.com)
Humans and chimpanzees ( Pan troglodytes ) are closely related species that share many physiologic similarities, including a general predisposition for pathogen exchange, which, in some cases, might lead to human pandemics ( 10 ). (cdc.gov)
Our results show that chimpanzees' willingness to take risks shares structural similarities with that of humans. (diw.de)
Well, in 1970, I was a newly minted undergraduate looking for a research project and I discovered about the Chimpanzee project and at that time, I was much more interested in questions about what is responsible for species differences in social organization than I was in anything in particular about close relatives of humans. (bigthink.com)
SIVcpz does not cause an Aids-like illness among chimpanzees, despite its similarity to the human virus and the very close genetic relationship between chimps and humans. (balloon-juice.com)
These are behaviors usually associated with ancient humans, not chimpanzees. (4apes.com)
Habituation presents ethical concerns because humans in general are a threat to chimpanzee existence in the wild (Kondgen et al. (4apes.com)
Chimpanzees and humans share a number of common traits, including deadly violence to their own kind. (pulseplanet.com)
Hobaiter: And what we wanted to know was is this a natural part of their behavior, or is that a result of the rather strange habitats that there are now forced to live in as a consequence of humans really cutting down their forest or habituating them for research? (pulseplanet.com)
So is this a sort of strange aberration that's come about because of contact with humans, or was that just a natural part of their behavior? (pulseplanet.com)
Here we provide the first network analysis of the musculoskeletal anatomy of both the fore- and hindlimbs of the two species of chimpanzee and humans. (nature.com)

These results indicate that chimpanzees exhibit a species-wide genetic susceptibility to rhinovirus C and that this virus, heretofore considered a uniquely human pathogen, can cross primate species barriers and threatens wild apes. (cdc.gov)
When its close relative the bonobo was more commonly known as the pygmy chimpanzee, this species was often called the common chimpanzee or the robust chimpanzee. (wikipedia.org)
The chimpanzee and the bonobo are the only species in the genus Pan. (wikipedia.org)
The chimpanzee is listed on the IUCN Red List as an endangered species. (wikipedia.org)
Surprisingly, the survey results showed that more than 70 percent of the chimpanzees as well as some of the most species-diverse communities of large mammals occurred outside the fully-protected areas, which currently include only 3.8 percent of the country's forests. (sciencedaily.com)
Well, I did my PhD on the feeding behavior of Chimpanzees and I think that was a rather nice thing to be able to study because life is, in many ways, a search energy and Chimpanzees, just like any other species, have as a primary concern just finding calories. (bigthink.com)
Jill is an anthropologist who studies chimpanzees as a model system to understand behaviors in species that are related to us that existed millions of years ago. (peoplebehindthescience.com)
Are Western Chimpanzees a New Species of Pan? (4apes.com)
So, are western chimpanzees so different from eastern chimpanzees that they should be classified as a separate species of the genus Pan ? (4apes.com)
Hobaiter: chimpanzees are one of the only other species where they actually kill other members, sometimes of their own communities, sometimes of a different community. (pulseplanet.com)
The main conclusion of our study was that killing another member of your own species is a natural behavior for chimpanzees. (pulseplanet.com)
Knowledge of the natural behavior of individual species is crucial in proper captive management of nonhuman primates (see Primate Info Net Factsheets for species-specific information). (asp.org)
Scientific studies have shown that captive primates who are housed socially exhibit higher levels of species-appropriate behavior, lower levels of stress (both behavioral and physiological indices of stress) and, overall, demonstrate well-being that is superior to that of their singly-housed counterparts. (asp.org)
Association of Zoos & Aquariums' (AZA) 2017 Accreditation Standards and Related Policies propose that animals "are provided quality spaces to live in with appropriate social groupings that promote natural, species-appropriate and motivated behavior. (asp.org)

however, these systems still require close range landscapes have significant impact on foraging and reproductive observations that can influence animal behavior, limit the number success, inter and intra-specific competition, creation and persis- of animals studied, and frequency of data captured [16,17]. (cdc.gov)

The results show that chimpanzees adjusted both the type of object used, and the modality of object actions to match the visual attention of the recipient, as well as colony differences in the use of targeted object actions. (springer.com)

And between 2014 and 2018, researchers found that group of chimpanzees in Gabon , Central Africa, had killed young gorillas and even saw a female chimpanzee eating an infant gorilla. (livescience.com)

The researchers conducted two tests involving food rewards with 40 wild-born chimpanzees at a sanctuary in the Republic of Congo. (homeword.com)
To determine how male chimpanzees manage to achieve and maintain this remarkable form of cooperation, researchers - led by Leakey Foundation Grantee Kevin Langergraber of Arizona State University's School of Human Evolution and Social Change and Institute of Human Origins - examined twenty years of data on who participated in patrols in a 200-member-strong Ngogo community of chimpanzees within Kibale National Park, Uganda. (leakeyfoundation.org)
Psychological researchers increasingly are turning to creatures in the wild to better understand the evolution and mechanisms of human cognition and behavior. (psychologicalscience.org)
The next task now for researchers is to pick apart what exactly is different between the behaviour of the chimpanzees and gorillas in the home ranges in the Republic of Congo and Gabon (about 1,000km apart). (livescience.com)
RESEARCHERS have traced the origin of HIV - the virus that causes Aids - to chimpanzees in southern Cameroon. (balloon-juice.com)
The researchers also have a lot of fun picking names for the chimpanzees. (peoplebehindthescience.com)
However, researchers are now realizing that there is incredible behavioral, ecological, and genetic diversity within chimpanzees, that was previously unknown. (4apes.com)
Researchers have shown that western chimpanzees do not fit the eastern chimpanzee stereotype (e.g. (4apes.com)
Logistically, habituation is difficult because chimpanzees lose their fear of our presence only after several years of repeated neutral contact with researchers (Fedigan, 2010). (4apes.com)
Furthermore, researchers at other sites in West Africa have also collected data bolstering the claim that western chimpanzee behavior is unlike eastern chimpanzee behavior (e.g. (4apes.com)
However, the researchers also find it puzzling that not every chimpanzee has the same personality traits, suggesting that there may be other factors at play that determine the diversity of personalities in chimpanzees. (neurosciencenews.com)
But a little sympathy for the youngsters, please - researchers say growing adolescent bodies help explain these behaviors. (wemu.org)

Another 2017 genetic study suggests ancient gene flow (introgression) between 200 and 550 thousand years ago from the bonobo into the ancestors of central and eastern chimpanzees. (wikipedia.org)

In many ways the performances of Donald Trump remind me of male chimpanzees and their dominance rituals ," Goodall told The Atlantic. (huffpost.com)
At Chimfunshi Wildlife Orphanage in Zambia, we observed an instance of fellatio occurring during a post-conflict period between two adult male chimpanzees (born and mother-reared at the sanctuary) where one of the males was the victim. (brill.com)
Unlike other animals, who will fight when groups happen to meet at the edges of their territories, male chimpanzees seem to deliberately search for neighbors while on patrols, potentially putting themselves in harm's way for uncertain gains. (leakeyfoundation.org)
So why do male chimpanzees choose to patrol when such forays may lead to violent, even lethal, encounters with members of neighboring groups? (leakeyfoundation.org)

They have also documented other unusual behaviors in chimps such as escaping the heat by soaking in water. (peoplebehindthescience.com)

Adolescent chimpanzees share some of the same risk-taking behaviors as human teens, but they may be less impulsive than their human counterparts, according to new research. (homeword.com)
However, the key features of environments that drive risk-taking behaviors are often underspecified. (bvsalud.org)

Nigeria-Cameroon chimpanzee (P. troglodytes ellioti (also known as P. t. vellerosus)), that live within forested areas across Nigeria and Cameroon, with 6000-9000 individuals still in existence. (wikipedia.org)

They observed chimpanzees for three years at the Ngogo site of Kibale National Park, focusing research on adolescent and young adult chimpanzees. (prosocial.world)

In the current study, we examined the underlying experiential, genetic, and neuroanatomical basis of mutual eye gaze variation in adult captive chimpanzees. (nature.com)
Animals in non-government-operated sanctuaries would not be used in medical research, although it is recommended they be used in behavioral research to increase understanding of optimal housing, management, and captive behavior. (nationalacademies.org)
To test for this ability, she and her colleagues Michael Tomasello at the Max Planck Institute and Brian Hare at Duke University in Durham, North Carolina, presented six pairs of semi-captive chimpanzees with a task that demanded cooperation and compromise. (newscientist.com)
Since 2016, confirmed cases of monkeypox have occurred in Central African Republic, Democratic Republic of the Congo, Liberia, Nigeria, Republic of the Congo, and Sierra Leone and in captive chimpanzees in Cameroon. (cdc.gov)
an outbreak in captive chimpanzees occurred in Cameroon. (cdc.gov)

Chimpanzees are one of the most well-studied primates , due to our biases toward studying our closest relatives. (prosocial.world)
Although same-sex sexual behaviour is observed in our close relatives, the chimpanzees, fellatio appears to be very rare - as yet there are no published reports clearly documenting its occurrence. (brill.com)
Given its rarity in chimpanzees, this fellatio between adult males also highlights the apparent behavioural flexibility present in our close relatives. (brill.com)
Territorial boundary patrolling by chimpanzees is a striking example of group-level cooperation displayed by our closest primate relatives. (leakeyfoundation.org)
I will present two studies on risk preferences in chimpanzees, one of our closest living relatives. (diw.de)
Subordinant behavior among primates and other animals living in groups of relatives may sometimes represent a kind of altruism that is advantageous (in terms of inclusive fitness) to the subordinant individual, providing the subordinant individual is a reproductively inferior relative of the dominant individual and contributes sufficiently to the dominant individual's reproduction. (uchicago.edu)

We describe a lethal respiratory outbreak among wild chimpanzees in Uganda in 2013 for which molecular and epidemiologic analyses implicate human rhinovirus C as the cause. (cdc.gov)
Richard Wrangham is a professor of biology and anthropology at Harvard University who studies chimpanzees, and their behavior, in Uganda. (bigthink.com)
All the animals lived in Ngamba Island Chimpanzee Sanctuary in Uganda, a 39-hectare reserve for chimpanzees orphaned by the bushmeat trade. (newscientist.com)

Chimpanzees and gorillas eat similar foods and most of the amiable interactions the scientists recorded in the Republic of Congo were of the apes feeding in fig and other fruit trees. (livescience.com)
Yet these gorillas in the Republic of Congo have a higher fruit diet than normal which could help explain their unusually chummy behaviour around the local chimpanzees. (livescience.com)

A multivariate analysis of variance revealed a significant rearing effect on bout length, with human-reared chimpanzees engaging in longer bouts of mutual gaze compared to mother-reared and wild-born individuals. (nature.com)
The results of our study provide crucial information for site prioritization and selection in this ongoing process," says lead author Clement Tweh of the Wild Chimpanzee Foundation in Liberia. (sciencedaily.com)
To better understand the evolution of object use, this study explored how objects are used in social interactions in semi-wild chimpanzees ( Pan troglodytes ). (springer.com)
Friendly associations between gorillas and chimpanzees in the wild can persist for decades, and may originate around food sharing and defense against predators. (livescience.com)
Fortunately, being able to study the chimpanzees in the wild makes it all worth it! (peoplebehindthescience.com)
The following housing and management criteria were developed with that goal in mind after the committee visited and viewed photographs of facilities (including sanctuaries), met with facility directors and several chimpanzee behaviorists, reviewed publications on wild chimpanzee behavior, and reviewed information provided during public sessions. (nationalacademies.org)
She travels to Uganda's Budongo Rainforest every year to observe chimpanzee behavior in the wild. (pulseplanet.com)

Pruetz studies chimpanzees in Senegal, and she said she has witnessed similar behavior there. (asianage.com)

A special issue of Current Directions in Psychological Science explores all that psychological scientists have learned about dog behavior and cognition in recent years. (psychologicalscience.org)

Social housing should be overseen by individuals with expertise in nonhuman primate behavior as animals housed socially require ongoing monitoring to ensure compatibility and to reduce the possibility of injury or distress. (asp.org)

We know many animals are fiercely territorial, including chimpanzees and gorillas. (livescience.com)

First, though there is widespread comparative interest in gaze-related behavior, such as mutual eye gaze and gaze following in nonhuman primates, there are few studies that have examined the potential role of genetic factors underlying individual variation in relatively large cohorts of individuals. (nature.com)

The research facilities at Lund University Primate Research Station Furuvik are part of the normal housing of the orangutans and chimpanzees and allow flexible ways of studying them through dedicated solutions that have research conditions in mind. (lu.se)

Adolescent chimpanzees are in some sense facing the same psychological tempest that human teens are," said lead researcher Alexandra Rosati, Ph.D., an associate professor of psychology and anthropology at the University of Michigan. (homeword.com)
n the first test, adolescent and adult chimpanzees could choose between two containers in a gambling task. (homeword.com)
During several rounds of the test, adolescent chimpanzees took the risky option more often than adult chimpanzees, but adolescents and adults had similar negative reactions when they received cucumber. (homeword.com)
Both adolescent and adult chimpanzees chose the greater delayed reward at a similar rate. (homeword.com)
For those adolescent and young adult males, sociosexual behaviors occurred approximately twice a month. (prosocial.world)
even though adolescent females were not the focus of the study, they noted that adolescent females engaged in sociosexual behaviors more frequently with adult females than with adolescent or adult males. (prosocial.world)

In the second study, we studied a large sample of chimpanzees (N=86) using a multimethod approach combining observer ratings (inspired by the general and domain specific SOEP-Risk-Items) with behavioral choice experiments. (diw.de)
Provisions for the special behavioral, cognitive, social, and emotional needs of chimpanzees are crucial to their well-being. (nationalacademies.org)

When it happens, Goodall told The Atlantic she'll be thinking of "Mike," a chimpanzee she studied that displayed dominance by kicking kerosene cans, creating a racket that sent would-be challengers fleeing. (huffpost.com)
After returning from a long day in the field in Senegal, the research team tends recount the behaviors of the chimpanzees, such as unexpected displays of dominance or agression, like they would the happenings of a soap opera. (peoplebehindthescience.com)

I have never seen a male like Freddy take up the role of a mother like that," says Christophe Boesch , one of the world's most renowned chimpanzee experts. (crosswalk.com)

The renowned British primatologist continues the "engrossing account" of her time among the chimpanzees of Gombe, Tanzania ( Publishers Weekly ). (copperfieldsbooks.com)
As a primatologist, Jill has studied the behavior of non-human primates such as chimpanzees, spider monkeys, howling monkeys, tamarins, patas monkeys, and vervets in various locales. (peoplebehindthescience.com)

The Ngogo chimpanzees patrol and kill neighbors more frequently than any other chimpanzee group," says John Mitani of The Leakey Foundation's Scientific Executive Committee. (leakeyfoundation.org)
Mitani has studied the Ngogo chimpanzees for 22 years. (leakeyfoundation.org)
Because of their success in competition against other groups, the Ngogo chimpanzees benefit from an unusually good food supply and long life expectancies. (leakeyfoundation.org)

This study reveals that non-genetic factors, and to a lesser extent, genetic factors appear to influence mutual eye gaze in adult chimpanzees, and is the first to report neuroanatomical correlates of mutual eye gaze variation in chimpanzees. (nature.com)
In the current study, one goal was to examine the independent and potential interactive effect of experiential and genetic factors on chimpanzee mutual eye gaze (MEG). (nature.com)

Chimpanzees exhibit behaviors that are consistent with gratitude," Simon-Thomas said. (heart.org)

One of the most exciting reports that came from Jill's group's research described how the chimpanzees in Senegal use tools to hunt, and the females engaged in this behavior more than males. (peoplebehindthescience.com)

Jane Goodall's work with chimpanzees represents one of the Western world's great scientific achievements. (copperfieldsbooks.com)

Overall, most sociosexual behaviors occurred during tense contexts, such as fusion events when members of different foraging subgroups come together or encounters with neighboring chimpanzee communities. (prosocial.world)
The definitions and recommendations are presented in the section "Chimpanzee Population Subgroups: Definitions and Recommendations. (nationalacademies.org)

An international research team has now counted chimpanzees and other large mammals living in Liberia. (sciencedaily.com)
An international research team, including scientists of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, has now counted chimpanzees and other large mammals living in Liberia. (sciencedaily.com)
Research suggests that findings about human risk preferences also apply to risk-taking in chimpanzees, our closest evolutionary ancestor in the animal kingdom. (psychologicalscience.org)
Trying to habituate chimpanzees (get them used to the presence of the research team) and get funding for habituation has been a challenge. (peoplebehindthescience.com)
Before the habituation can begin, the research team also faces the difficult task of finding the chimpanzees. (peoplebehindthescience.com)
Because the issue of long-term care of chimpanzees is of concern to many, these recommendations are intended to provide guidance for all chimpanzee holding facilities, including facilities that are government-funded (nationally and internationally), private for-profit and nonprofit research institutions, private sanctuaries, zoos, and performing acts that use chimpanzees. (nationalacademies.org)
Animals from government-sponsored long-term care facilities are supplied to biomedical research, and the majority of support for chimpanzees in these facilities for research and breeding comes from the federal government and the biomedical industry. (nationalacademies.org)
Through this research we aim to gain a better understanding about the mechanism underlying cooperative behavior. (vetmeduni.ac.at)
Lower-ranking chimpanzees, new research suggests, know how to bargain with their superiors to achieve a fairer split of food. (newscientist.com)
Anthropology may stimulate reflection about: the impact of method on the nature of data, the idea of totality, the construction of otherness, the question of meaning in research about the behavior of chimpanzees and the relevance of social organization for the conception of culture. (bvsalud.org)

Yet the evolutionary roots of human risk taking behavior remain poorly understood. (diw.de)

These results provide empirical evidence highlighting that chimpanzees use objects in diverse ways to communicate with conspecifics and that their use may be shaped by social factors, contributing to our understanding of the evolution of human nonverbal communication, language, and tool use. (springer.com)
To shed new light on this topic, the aim of this paper is to explore how chimpanzees use object actions when interacting with others and examine the effect of social factors on object signalling. (springer.com)
In the first study, we investigated whether chimpanzees (N=13) differentiate between social and nonsocial forms of uncertainty. (diw.de)
Two chimpanzees share food, a common form of social behavior. (livescience.com)
Thus, it provides an approach which could serve as the basis for a general and comprehensive theory of social behavior. (uchicago.edu)
So, it's a wonderful foundation for thinking about the influence of the natural world on the more complex, richer forms of social behavior. (bigthink.com)
A new study finds that chimpanzees with more aggressive personalities and less conscientiousness are more successful at climbing the social ladder and siring offspring than their more passive counterparts. (neurosciencenews.com)

This seems to be particularly evident in the behaviour of the Fongoli chimpanzees in Senegal. (4apes.com)

As Liberia has released large areas for deforestation, the local decision-makers can now use the results of this study in order to protect the chimpanzees more effectively. (sciencedaily.com)
Building on these initial reports of communicative object use, the first aim of this study was to explore the use of object actions in chimpanzees and their flexibility across contexts. (springer.com)
Most studies have focused on short-term benefits of cooperation, he adds, "but our study shows the benefit of long-term data collection, and also that we still have a lot to learn from these chimpanzees. (leakeyfoundation.org)
But a ground breaking recent study shows chimpanzees and gorillas form friendships, some lasting at least 20 years. (livescience.com)
The study also found chimpanzee and gorilla females with young offspring also bonded with each other, as did the whole spectrum of age ranges. (livescience.com)
Objective circumstances and behaviors like wealth and health affect happiness as much as subjective psychological traits, according to a recent study. (neurosciencenews.com)
One such award was given to federal agencies that had funded petitioner scientist's study of emotional behavior in which he sought an objective measure of aggression, concentrating upon the behavior patterns of certain animals. (justia.com)

If gorillas or chimpanzees find ripe ones perhaps they are better off tolerating one another than wasting energy chasing each other away. (livescience.com)
Chimpanzees tend to eat much more fruit than gorillas. (livescience.com)

Mutualism (reciprocity and cooperation) and parental manipulation may produce beneficent behavior resembling that produced by kin selection. (uchicago.edu)

This means that eastern chimpanzee behaviour is typically used to represent normative chimpanzee behaviour. (4apes.com)

It has been documented by many studies before, but often is reported as something other than "sociosexual behavior," subsumed under behaviors such as "reassurance" or "reconciliation," or "gestures. (prosocial.world)

Once we meet the chimpanzee family, the camera captures amazingly up close and personal views of these animals going about their daily business of finding food and fending off predators. (crosswalk.com)
It reaches down and pecks at the dot on its own breast.This is the classic behavior required for passing the "mirror test," an influential experiment used to test for self-awareness in animals. (nautil.us)
Analysis of GPS tracks indicated that a crop field frequented by both chimpanzees and domesticated animals was a potential hotspot for Cryptosporidium transmission. (cdc.gov)

The longest-running chimpanzee field sites have been running for over 50 years. (prosocial.world)
For two years, the survey teams searched for the presence of chimpanzees and other large mammals in more than 100 locations throughout the country. (sciencedaily.com)
Western chimpanzee juvenile female "Joya," aged 6 years, playing with young male "Peley," aged 12 years. (livescience.com)

According to scientists, they have made a new discovery about chimpanzees' diets. (asianage.com)

Anatomy7

Organisms38

Diseases13

Chemicals and Drugs11

Analytical, Diagnostic and Therapeutic Techniques and Equipment22

Psychiatry and Psychology99

Phenomena and Processes40

Disciplines and Occupations4

Anthropology, Education, Sociology and Social Phenomena16

Technology, Industry, Agriculture3

Information Science11

Named Groups3

Health Care15

Geographicals6

Jane Goodall7

Populations11

Bonobos17

Subspecies9

Humans11

Species14

Animal Behavior1

Results show that chimpanzees1

Group of chimpanzees1

Researchers12

Eastern chimpanzees1

Male chimpanzees4

Chimps1

Risk-taking be2

Troglodytes ellioti1

Kibale Nati1

Captive5

Relatives6

Uganda3

Republic of Co2

Wild7

Pruetz1

Cognition1

Primate behavior1

Territorial1

Nonhuman1

Orangutans1

Adolescent6

Behavioral2

Dominance2

Boesch1

Primatologist2

Ngogo3

Genetic2

Exhibit1

Males1

World's1

Subgroups2

Research10

Evolutionary1

Social7

Senegal1

Study7

Gorillas2

Cooperation1

Behaviour1

Gestures1

Animals3

Years3

Scientists1