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Chimpanzees (Pan troglodytes), also known as chimps, are a species of great ape native to the forests and savannahs of tropical Africa. They are highly territorial and are known to kill other chimpanzees. A study published in 2010 found that chimpanzees wage war over territory, with larger groups taking over smaller groups' territory to gain access to more resources, food, and females. This has led to the question of whether Pan troglodytes wage war on their own kind.
| Characteristics | Values |
|---|---|
| Chimpanzee behaviour | Highly territorial |
| Chimpanzees killing their own kind | Yes |
| Reason for killing | Disputes over territory, not mates |
| Behaviour influenced by | Artificial feeding systems |
| Innate behaviour | Disputes are generally settled without violence |
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What You'll Learn
Chimpanzees are highly territorial
Chimpanzees, or Pan troglodytes, are a species of great ape native to the forests and savannahs of tropical Africa. They are highly territorial and will frequently kill other chimpanzees to protect their land.
In her 1991 book, *The Egalitarians*, Margaret Power wrote that the field studies from which this aggressive data came—Gombe and Mahale—used artificial feeding systems that increased aggression in the chimpanzee populations studied. Thus, this behaviour may not reflect the innate characteristics of the species as a whole. However, in the years following her artificial feeding conditions at Gombe, Jane Goodall described groups of male chimpanzees patrolling the borders of their territory, brutally attacking chimpanzees that had split off from the Gombe group.
Chimpanzees live in groups that range in size from 15 to 150 members, although individuals travel and forage in much smaller groups during the day. The species lives in a strict male-dominated hierarchy, where disputes are generally settled without the need for violence. However, a study published in 2010 found that chimpanzees do wage wars over territory, not mates. Patrols from smaller groups are more likely to avoid contact with their neighbours, while patrols from larger groups may even take over a smaller group's territory, gaining access to more resources, food, and females.
Chimpanzees are an endangered species, with their populations in the wild having been reduced by hunting, destruction of habitat, and commercial exportation for use in zoos and research laboratories. Despite having one of the largest geographic ranges of the great apes, chimpanzee populations have fallen significantly since the 1980s.
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They frequently kill their own
Chimpanzees, or Pan troglodytes, have been described as highly territorial and will frequently kill members of their own species. This behaviour was observed by Jane Goodall in the years following her artificial feeding conditions at Gombe. Goodall described groups of male chimpanzees patrolling the borders of their territory, brutally attacking chimpanzees that had split off from the Gombe group. This behaviour was also observed in field studies from Gombe and Mahale, though Margaret Power suggested that the artificial feeding systems used in these studies may have increased aggression in the chimpanzee populations. As such, this behaviour may not reflect the innate characteristics of the species as a whole.
Chimpanzees live in groups that can range in size from 15 to 150 members, with individuals travelling and foraging in smaller groups during the day. They are highly intelligent, with the ability to remember symbols, cooperate, use tools, and use language. They also display self-awareness, passing the mirror test, and have been observed using insects to treat their own wounds and those of others.
Despite their intelligence and social behaviour, chimpanzees have been known to wage wars over territory. A study published in 2010 found that larger groups of chimpanzees are more likely to take over a smaller group's territory, gaining access to more resources, food, and females. This finding challenges the idea that disputes among chimpanzees are generally settled without violence.
While chimpanzees are closely related to humans, their behaviour can be quite different. Chimpanzees are native to the forests and savannahs of tropical Africa and spend their time both on the ground and in the trees. They are covered in coarse black hair, but their faces, fingers, toes, palms, and soles are bare. Male chimpanzees are larger and more robust than females, and they live in a strict male-dominated hierarchy.
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Male chimpanzees patrol borders
Male chimpanzees (Pan troglodytes) have been observed patrolling the borders of their territory and brutally attacking other male chimpanzees that have split off from their group. Chimpanzees are highly territorial and will frequently kill other chimpanzees. They wage wars over territory, not mates, and larger groups are more likely to take over a smaller group's territory, gaining access to more resources, food, and females.
Chimpanzees are native to the forests and savannahs of tropical Africa, ranging from Senegal in the west to northwestern Tanzania in the east. They live in groups that can range in size from 15 to 150 members, with males tending to be larger and more robust than females. The species lives in a strict male-dominated hierarchy, where disputes are generally settled without violence. However, male chimpanzees have been known to exhibit aggressive behaviour when patrolling their territory.
Jane Goodall, a researcher who studied chimpanzees in the wild, described these border patrols in detail. She observed groups of male chimpanzees brutally attacking other males who had split off from their group, emphasizing the highly territorial nature of these primates. This behaviour may be influenced by the male-dominated hierarchy within chimpanzee communities, where males play a dominant role in protecting and expanding their group's territory.
The border patrols conducted by male chimpanzees serve as a form of territorial defence and expansion. By patrolling their borders, they mark their territory and deter intruders. When encountering chimpanzees from other groups, especially those that have left their original group, violent conflicts can occur. These patrols are more common in larger groups, as they have a higher number of males available for patrolling and are more confident in engaging in conflicts.
While male chimpanzees are primarily responsible for border patrols and territorial defence, female chimpanzees also play a role in protecting their group's territory. They contribute to the overall defence strategy by forming alliances with males, grooming them, and supporting them during conflicts. This social behaviour strengthens the cohesion of the group and enhances their ability to defend their territory effectively.
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They wage wars over territory
Chimpanzees (Pan troglodytes) are a species of great ape native to the forests and savannahs of tropical Africa. They are highly territorial and are known to kill other chimpanzees. Jane Goodall, in the years following her artificial feeding conditions at Gombe, observed male chimpanzees patrolling the borders of their territory and brutally attacking chimpanzees that had split off from the Gombe group.
A 2010 study found that chimpanzees wage wars over territory, not mates. Larger groups are more likely to take over a smaller group's territory, gaining access to more resources, food, and females. Chimpanzees live in a strict male-dominated hierarchy, and disputes are generally settled without violence. However, the artificial feeding conditions in field studies have been criticized for increasing aggression in the studied populations, which may not reflect the innate characteristics of the species.
Chimpanzees are closely related to humans and exhibit signs of intelligence, such as remembering symbols, cooperation, tool use, and language. They are among the species that have passed the mirror test, suggesting self-awareness. Chimpanzees stand approximately 1–1.7 meters tall and weigh about 32–60 kilograms. They are covered in brown or black hair, with bare faces and short white beards.
The territorial nature of chimpanzees leads them to wage wars over territory. They patrol and defend their borders, attacking any intruders or chimpanzees that have left their group. This behavior is driven by their need to protect their resources, food supply, and access to females. Larger groups have an advantage in these conflicts, as they can more easily take over smaller groups' territories.
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Large groups take over smaller ones
Chimpanzees, or Pan troglodytes, are a species of great ape native to the forests and savannahs of tropical Africa. They are highly territorial and are known to kill other chimpanzees. While some scholars have argued that this behaviour may be a result of artificial feeding conditions in captivity, which increase aggression, others have observed that male chimpanzees patrol the borders of their territory and attack outsiders.
Indeed, chimpanzees have been observed to wage war over territory. Larger groups may take over the territory of smaller groups, gaining access to more resources, food, and females. This behaviour was observed by Jane Goodall in the years following her artificial feeding conditions at Gombe.
Chimpanzees live in groups that range in size from 15 to 150 members, with individuals travelling and foraging in smaller groups during the day. They live in a strict male-dominated hierarchy, where disputes are generally settled without violence. However, their social structure does not preclude the possibility of larger groups taking over smaller ones.
The ability of larger groups to take over smaller ones may be a result of their increased access to resources and females, which could enhance their reproductive success. By contrast, smaller groups may be more likely to avoid contact with their neighbours, as they have fewer members to contribute to patrols and defence of their territory. This dynamic illustrates the complex social and territorial behaviours of chimpanzees, which are driven by their hierarchical structure and competition for resources.
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Frequently asked questions
Yes, chimpanzees (Pan troglodytes) have been described as highly territorial and will frequently kill other chimpanzees. A study published in 2010 found that they wage wars over territory, not mates.
Pan troglodytes, also known as chimpanzees, are a species of great ape native to the forests and savannahs of tropical Africa.
Chimpanzees are highly intelligent and have passed the mirror test, suggesting self-awareness. They are also social animals, living in groups that range in size from 15 to 150 members.
Yes, chimpanzees are humans' closest living relatives. They are also closely related to bonobos, which split from the common chimpanzee line about 2 million years ago.
There are four confirmed subspecies of Pan troglodytes: Central chimpanzee (Pan troglodytes troglodytes), Western chimpanzee (Pan troglodytes verus), Nigeria-Cameroon chimpanzee (Pan troglodytes ellioti), and Eastern chimpanzee (Pan troglodytes schweinfurthii).
