Barbary macaque

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Barbary macaque
Temporal range: Early Pliocene–Recent
Macaca sylvanus.Mother and baby.jpg
Young Barbary macaque with its mother
CITES Appendix I (CITES) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Cercopithecidae
Genus: Macaca
Species:
M. sylvanus [2]
Binomial name
Macaca sylvanus [2]
Macaca sylvanus range map.png
Native Range in Red (Northeast Africa); Introduced Range in Violet (Gibraltar)
Synonyms [4]

Simia sylvanusLinnaeus, 1758
Inuus ecaudatus É. Geoffroy Saint-Hilaire, 1812
Simia inuusLinnaeus, 1766
Simia pithecus Schreber, 1799
Pithecus pygmaeus Reichenbach, 1863

Contents

The Barbary macaque (Macaca sylvanus), also known as Barbary ape, is a macaque species native to the Atlas Mountains of Algeria, Tunisia and Morocco, along with a small introduced population in Gibraltar. [1] It is the type species of the genus Macaca. The species is of particular interest because males play an atypical role in rearing young. Because of uncertain paternity, males are integral to raising all infants. Generally, Barbary macaques of both sexes and all ages contribute in alloparental care of young. [5]

The diet of the Barbary macaque consists primarily of plants and insects and they are found in a variety of habitats. Males live to around 25 years old while females may live up to 30 years. [6] [7] Besides humans, they are the only free-living primates in Europe. Although the species is commonly referred to as the "Barbary ape", the Barbary macaque is a true monkey. Its name refers to the Barbary Coast of Northwest Africa.

The population of the Barbary macaques in Gibraltar is the only one outside Northern Africa and the only population of wild monkeys in Europe. Barbary macaques were once widely distributed in Europe, as far north as England, from the Early Pliocene (Zanclean) to the Late Pleistocene, as recently as 85-40,000 years ago. [8] About 300 macaques live on the Rock of Gibraltar. This population appears to be stable or increasing, while the North African population is declining. [1]

Taxonomy and phylogeny

Skull and brain, as illustrated in Gervais' Histoire naturelle des mammiferes Barbarymaqaqueskull&brain.png
Skull and brain, as illustrated in Gervais' Histoire naturelle des mammifères
3d model of skeleton Macaca sylvanus 3d scan Natural History Museum University of Pisa C 1600.stl
3d model of skeleton

The Barbary macaque is first described in scientific literature by Aristotle in the fourth century BCE work History of Animals . He writes of an ape with "arms like a man, only covered with hair", "feet [which] are exceptional in kind ... like large hands", and "a tail as small as small can be, just a sort of indication of a tail". It is likely that Galen (129–c.216) dissected the Barbary macaque in the second century CE, presuming the internal structure to be the same as a human. Such was the authority of his work, some mistakes he made were not corrected until Andreas Vesalius (1514–1564) proved otherwise over a thousand years later. [9] The Barbary macaque was included in the grouping Simia by Conrad Gessner in his 1551 work Historia Animalium , [9] a name which he claimed was already in use by the Greeks. [10] Gessner's Simia was subsequently used as one of Carl Linnaeus' four primate genera when he published Systema Naturae in 1758. Linnaeus proposed the scientific name Simia sylvanus for the Barbary macaque. [3] During the next 150 years primate taxonomy was subject to great changes and the Barbary macaque was placed in over thirty different taxa. [7] The confusion over the use of Simia became so great that the International Commission on Zoological Nomenclature (ICZN) suppressed its use in 1929. [10] [7] This meant the Barbary macaque was placed in the next oldest genus assigned to it, Macaca , described by Bernard Germain de Lacépède in 1799. [7]

Phylogeny

The Barbary macaque is the most basal macaque species. [11] [12] Phylogenetic and molecular analyses show it is a sister group to all Asian macaque species. The results of a phylogenetic analysis show that the chromosomes of Barbary macaque resemble those of the rhesus macaque with the exception of chromosomes 1, 4, 9, and 16. It was also discovered that chromosome 18 in the Barbary macaque is homologous to chromosome 13 in humans. [7]

Polymerase chain reaction studies have found Alu element insertions, small pieces of genetic code in genomes, can infer primate phylogenetic relationships. Using this method the phylogenetic relationship of ten species within the genus Macaca has been resolved, showing the Barbary macaque to be a sister group to all other macaques. [11]

Phylogeny of ten species of Macaca [11]
Macaca  

Macaca sylvanus (Barbary macaque)

M. nigra (Celebes crested macaque)

M. silenus (lion-tailed macaque)

M. nemestrina (southern pig-tailed macaque)

M. radiata (bonnet macaque)

M. thibetana (Tibetan macaque)

M. arctoides (stump-tailed macaque)

M. fascicularis (crab-eating macaque)

M. fuscata (Japanese macaque)

M. mulatta (rhesus macaque)

Fossil record

Barbary macaque fossils have been found across Europe, from the Atlantic Ocean to the Black Sea, dating from the Early Pliocene 5.3 to 3.6 million years ago to the Late Pleistocene, assigned to various subspecies including M. s. sylvanus, M. s. pliocena and M. s. florentina. The insular dwarf M. majori endemic to Sardinia-Corsica during the Early Pleistocene, usually considered to have derived from M. sylvanus, is generally considered a distinct species. Remains from Norfolk, England, dating to the Middle Pleistocene, at 53 degrees latitude, are amongst the northernmost records of non-human primates. [8] Archaic humans and Barbary macaques co-occur at numerous sites, and it is possible they may have used Barbary macaques as a source of food. [13] [14] The youngest known remains of Barbary macaques in Europe are from Hunas in Bavaria, Germany, dated to 85,000–40,000 years ago. The distribution of Barbary macaques in Europe was likely strongly controlled by climate, only extending into Northern Europe during interglacial intervals, [8] while they were restricted to more southerly regions during colder glacial phases. [15] Disappearance of macaques from Europe may have been caused by human activity. [16]

Description

Head of individual at the Prague Zoo in Prague, Czech Republic Macaca sylvanus, ZOO Praha 131.jpg
Head of individual at the Prague Zoo in Prague, Czech Republic
Skull photographed at the Museum Wiesbaden in Wiesbaden, Germany Macaca sylvanus 02 MWNH 195.jpg
Skull photographed at the Museum Wiesbaden in Wiesbaden, Germany
Hands and feet Macaca sylvanus feet and hands.JPG
Hands and feet

The Barbary macaque has a dark pink face with a pale buff to golden brown to grey pelage and a lighter underside. The colour of mature adults changes with ages. [17] [7] In adults and subadults the fur on the back is variegated pale and dark which is due to banding on individual hairs. In spring to early summer, as the temperatures rise, the adult macaques moult their thick winter fur. The species shows sexual dimorphism with males larger than females. The mean head-body length is 55.7 cm (21.9 in) in females and 63.4 cm (25.0 in) in males. The boneless vestigial tail is greatly reduced compared with other macaque species and, if not absent, measures 4–22 mm (0.16–0.87 in). Males may have a more prominent tail, though data is scarce. [7] The average body weight is 9.9–11 kg (22–24 lb) in females and 14.5–16 kg (32–35 lb) in males. [7] [18]

Like all Old World monkeys, the Barbary macaque has well-developed sitting pads (ischial callosities) on its rear. [18] Females exhibit an exaggerated anogenital swelling, [19] [20] which increases in size during oestrus. [21] [22] It has cheek pouches and high-crowned bilophodont molars (molars with two ridges); the third molar is elongated. [18] The diploid chromosome number of the Barbary macaque is 42, like other members of the Old World monkey tribe Papionini. [7]

Distribution and habitat

Barbary macaques at the Ziama Mansouriah in Jijel Province, Algeria Macaque berbere a Ziama Mansouriah 17 (Algerie).jpg
Barbary macaques at the Ziama Mansouriah in Jijel Province, Algeria

Historically, the Barbary macaque occurred across North Africa from Libya to Morocco. [1] It is the only African primate that survives north of the Sahara Desert. [17] It lives mainly in fragmented areas of the Rif and the Middle and High Atlas mountain ranges in Morocco and the Grande and Petite Kabylie mountain region in Algeria. It has been recorded at elevations of 400–2,300 m (1,300–7,500 ft), though it seems to prefer higher elevations. The Moroccan and Algerian populations are around 700 km (430 mi) apart, although the gap was smaller during the Holocene. [7]

The Barbary macaque also occurs in the British Overseas Territory of Gibraltar at the southern tip of Europe's Iberian Peninsula. Gibraltar historian Alonso Hernández del Portillo noted in the early 17th century that the macaques had been present "from time immemorial". [23] Most likely, the Moors introduced macaques from North Africa to Gibraltar during the Middle Ages. [24] During World War II, Winston Churchill ordered for more Barbary macaques to be introduced to Gibraltar to reverse population declines. [23] Today, there are around 300 Barbary macaques in Gibraltar. [1]

It can live in a variety of habitats, such as cedar, fir, and oak forests, grasslands, thermophilous scrub, and rocky ridges full of vegetation in Mediterranean climate with seasonal extremes of temperature. [7] [17] In Morocco, most Barbary macaques inhabit Atlas cedar (Cedrus atlantica) forests, but this could reflect the present habitat availability rather than a specific preference for this habitat. [7] In Algeria, the Barbary macaque inhabits mainly Grande and Petite Kabylia, ranges that form part of the Tell Atlas mountain chain, but there is also an isolated population in Chréa National Park. [25] [1] It lives in mixed cedar and holm oak forests, humid Portuguese and cork oak forests, and scrub-covered gorges. [25]

Fossil evidence indicates that the Barbary macaque occurred in southern Europe during the Pleistocene and during interglacial periods also in England. [26] A Tunisian population was mentioned in the works of ancient Greek writer Herodotus, indicating the species has become extinct there within the last 2,500 years. [7]

Behaviour and ecology

Female Barbary macaque with young suckling Female Macaque with young suckling.jpg
Female Barbary macaque with young suckling

The Barbary macaque is gregarious, forming mixed groups of several females and males. Troops can have 10 to 100 individuals and are matriarchal, with their hierarchy determined by lineage to the lead female. [27] Unlike other macaques, the males participate in rearing the young. [27] Males may spend a considerable amount of time playing with and grooming infants. In this way, a strong social bond is formed between males and juveniles, both the male's own offspring and those of others in the troop. This may be a result of selectivity on the part of the females, who may prefer highly parental males. [5]

The mating season runs from November through March. The gestation period is 147 to 192 days, and females usually have only one offspring per pregnancy. Females rear twins in rare instances. Offspring reach maturity at three to four years of age, and may live for 20 years or more. [28]

Grooming other Barbary macaques leads to lower stress levels for the individuals that do the grooming. [29] While stress levels do not appear to be reduced in animals that are groomed, grooming more individuals leads to even lower stress levels; this is a benefit that might outweigh the costs to the groomer, which include less time to participate in other activities such as foraging. The mechanism for reducing stress may be explained by the social relationships (and support) that are formed by grooming. [29]

Male Barbary macaques interfere in conflicts and form coalitions with other males, usually with related males rather than with unrelated males. These relationships suggest that males do so in order to indirectly increase their own fitness. Furthermore, males form coalitions with closely related kin more often than they do with distantly related kin. [30] These coalitions are not permanent and may change frequently as male ranking within the group changes. Although males are more likely to form coalitions with males who have helped them in the past, this is not as important as relatedness in determining coalitions. [30] Males avoid conflicting with higher ranking males and will more frequently form coalitions with the higher ranking male in a conflict. [30] Close grouping of males occur when infant Barbary macaques are present. Interactions between males are commonly initiated when a male presents an infant macaque to an adult male who is not caring for an infant, or when an unattached male approaches males who are caring for infants. This behaviour leads to a type of social buffering, which reduces the number of antagonistic interactions among males in a group. [27]

An open mouth display by the Barbary macaque is used most commonly by juvenile macaques as a sign of playfulness. [31]

Alarm calls

The main purpose of calls in Barbary macaques is to alert other group members to possible dangers such as predators. Barbary macaques can discriminate calls by individuals in their own group from those by individuals in other groups of conspecific macaques. Neither genetic variation nor habitat differences are likely causes of acoustic variation in the calls of different social groups. Instead, minor variations in acoustic structure among groups similar to the vocal accommodation seen in humans are the likely cause. However, acoustic characteristics such as pitch and loudness are varied based on the vocalizations of individuals they associate with, and social situations play a role in the acoustic structure of calls. [32] [33]

Barbary macaque females have the ability to recognize their own offspring's calls through a variety of acoustic parameters. Because of this, infant calls do not have to differ dramatically for mothers to be able to recognize their own infant's call. Mothers demonstrate different behaviours on hearing the calls of other infant macaques as opposed to the calls of their own offspring. More parameters for vocalizations lead to more reliable identification of calls in both infants and in adult macaques so it is not surprising that the same acoustic characteristics that are heard in infant calls are also heard in adult calls. [34]

Mating

Barbary macaques mating (Bejaia, Algeria, 2008) Magot 1.jpg
Barbary macaques mating (Béjaïa, Algeria, 2008)

Although Barbary macaques are sexually active at all points during a female's reproductive cycle, male Barbary macaques determine a female's most fertile period by sexual swellings on the female. [35] Mating is most common during a female's most fertile period. The swelling size of the female reaches a maximum around the time of ovulation, suggesting that size helps a male predict when he should mate. This is further supported by the fact that male ejaculation peaks at the same time that female sexual swelling peaks. Change in female sexual behaviour around the time of ovulation is insufficient to demonstrate to the male that the female is fertile. The swellings, therefore, appear necessary for predicting fertility. [22]

Barbary macaque females differ from other nonhuman primates in that they often mate with a majority of the males in their social group. While females are active in choosing sexual associations, the mating behaviour of macaque social groups is not entirely determined by female choice. [35] These multiple matings by females decrease the certainty of paternity of male Barbary macaques and may lead them to care for all infants within the group. For a male to ensure his reproductive success, he must maximize his time spent around the females in the group during their fertile periods. Injuries to male macaques peak during the fertile period, which points to male-male competition as an important determinant of male reproductive success. [35] Not allowing a female to mate with other males, however, would be costly to the male, since doing so would not allow him to mate with more females. [35]

Parenting

Closeup of the face of a juvenile in Gibraltar Gibraltar Barbary Macaque.jpg
Closeup of the face of a juvenile in Gibraltar
A young macaque at the Montagne des Singes, Alsace Baby monkey at Montagne Des Singes, Alsace.jpg
A young macaque at the Montagne des Singes, Alsace

Barbary macaques from all age and sex groups participate in alloparental care of infants. Male care of infants has been of particular interest to research because high levels of care from males are uncommon in groups where paternity is highly uncertain. Males even act as true alloparents of infant macaques by carrying them and caring for them for hours at a time as opposed to just demonstrating more casual interactions with the infants. The social status of females plays a role in female alloparental interactions with infants. Higher-ranking females have more interactions, whereas younger, lower-ranking females have less access to infants. [5]

Diet

The diet of the Barbary macaque consists of a mixture of plants and insect prey. It consumes a large variety of gymnosperms and angiosperms. Almost every part of the plant is eaten, including flowers, fruits, seeds, seedlings, leaves, buds, bark, gum, stems, roots, bulbs, and corms. Common prey caught and consumed by Barbary macaques are snails, earthworms, scorpions, spiders, centipedes, millipedes, grasshoppers, termites, water striders, scale insects, beetles, butterflies, moths, ants, and even tadpoles. [7]

Barbary macaques can cause major damage to the trees in their prime habitat, the Atlas cedar forests in Morocco. Since deforestation in Morocco has become a major environmental problem in recent years, research has been conducted to determine the cause of the bark stripping behaviour demonstrated by these macaques. Cedar trees are also vital to this population of Barbary macaques as an area with cedars can support a much higher density of macaques than one without them. A lack of a water source and exclusion of monkeys from water sources are major causes of cedar bark stripping behaviour in Barbary macaques. Density of macaques, however, is less correlated with the behaviour than the other causes considered. [36]

Predators

The Barbary macaque's main predators are the domestic dog, [7] leopard and eagles; the golden eagle may only prey on cubs, since it is morphologically not adapted to hunt primates. [37] The approach of eagles and domestic dogs is known to elicit an alarm call response. [7]

Threats

19th century illustration Magot or Barbary Macaque.jpg
19th century illustration

Wild populations of Barbary macaques have suffered a major decline in recent years to the point of being declared an endangered species on the IUCN Red List since 2008. The Barbary macaque is threatened by fragmentation and degradation of forest habitat, and poaching for the illegal pet trade; it is also killed in retaliation for raiding crops. [1] [38] Today, no accurate data exists on the location and number of individuals out of their natural habitat. An unknown number of individuals are living in zoological collections, at other institutions, in private hands, in quarantine, or waiting to be relocated to appropriate destinations. [1]

The habitat of the Barbary macaque is under threat from increased logging activity. [39] Local farmers regard the Barbary macaque as pest and engage in its extermination. Once common throughout northern Africa and southern Mediterranean Europe, only an estimated 12,000 to 21,000 Barbary macaques are left in Morocco and Algeria. Once, its distribution was much more extensive, spreading east through Algeria, Tunisia and Libya, and north to the United Kingdom. Its range is no longer continuous, with only isolated areas of range remaining. By the Pleistocene, it inhabited the warmer Mediterranean regions of Europe, from the Balearic Islands and mainland Iberia and France in the west, east to Italy, Sicily, Malta, and as far north as Germany and Norfolk in the British Isles. [40] The species decreased with the arrival of the last Last Glacial Period, going functionally extinct on the Iberian Peninsula except for Gibraltar around 30,000 years ago. [41]

The Barbary macaque is threatened by habitat loss, overgrazing, and illegal capture. In Morocco, tourists interact with Barbary macaques in many regions. Information collected in the interviews with inhabitants in the High Atlas of Morocco indicated that the capture of macaques occurs in these regions. Conflict between local people and wild macaques is one of the greatest challenges to Barbary macaque conservation in Morocco. The main threats to the survival of Barbary macaques in this region have been found to be habitat destruction and the impact of livestock grazing, but problems of conflict with inhabitants are also increasing due to crop raiding and the illegal capture of macaques. Human–macaque conflict is mainly due to crop raiding. In the High Atlas of Morocco, macaques attract a large number of tourists every year, and they are favoured for their potential benefits to tourism. In addition, macaques have some ecological roles; for example, they are the predators of several destructive insects and pests of plants and participate in seed dispersal in many plant species. [42] [43] [44] [45] [46] [47]

In the Central High Atlas, the Barbary macaque occurs in relatively small and fragmented areas restricted to the main valleys at elevations of 700–2,400 m (2,300–7,900 ft). In a 2013 study, researchers reported that they found Barbary macaques in relatively small and fragmented habitats in 10 sites, and that the species no longer occurred in four localities. This could be attributed to habitat degradation, hunting activities, the impact of livestock grazing, and disturbance by people. As deforestation for agriculture and overgrazing continues, the remaining forest becomes increasingly fragmented. Consequently, the Barbary macaque is now restricted to small, fragmented relict habitats. [42]

Human use and tourism

Many of the mistaken ideas about human anatomy contained in the writings of Galen are apparently due to his use of the Barbary macaque, the only anthropoid available to him, in dissections. [48] Strong cultural taboos of his time prevented his performing any dissections of human cadavers, even in his role as physician and teacher of physicians. [49]

Macaques in Morocco are frequently used as photo props, despite their protected status. [50] Tourists are encouraged to take photos with the animals for a fee. Macaques are also sold as pets in Morocco and Algeria, and exported to Europe to be used as pets and fighting monkeys, both in physical marketplaces and online. [50] [51]

Tourists interact with wild monkeys across the globe, and in some situations, tourists may be encouraged to feed, photograph, and touch the monkeys. Although tourism has the potential to bring in money towards conservation goals and provides an incentive for the protection of natural habitats, close proximity and interactions with tourists can also have significant psychological impacts on the Barbary macaques. Fecal samples and stress-indicating behaviours, such as belly scratching, indicate that the presence of tourists has a negative impact on the macaques. Human activities such as taking photographs cause the animals stress, possibly because the people come too close to the animals and make prolonged eye contact (a sign of aggression in many primates). Macaques that live in areas close to human contact have more parasites and lower overall health than those that live in wilder environments, at least in part due to the unhealthy diets they receive as a result of feeding from humans. [52] [53]

Several groups of Barbary macaques can be found in tourist sites, where they are affected by the presence of visitors providing food to them. Researchers comparing two such groups in the central High Atlas mountains in 2008 found that the tourist group of Barbary macaques spent significantly more time engaged in resting and aggressive behaviour, and foraged and moved significantly less than the wild group. The tourist group spent significantly less time per day feeding on herbs, seeds, and acorns than the wild group. Human food accounted for 26% of the daily feeding records for the tourist group, and 1% for the wild-feeding group. [44] Scientists who collected data on the seasonal activity budget and diet composition of the endangered Barbary macaque group inhabiting a tourist site in Morocco found that activity budgets and diet of the study group varied markedly among seasons and habitats. The percentage of daily time spent in foraging and moving was lowest in spring, and the daily time spent in resting was highest in spring and summer. The time budget devoted to aggressive display was highest in spring than the other three seasons. There is an increase in the daily feeding time spent eating flowers and fruits in summer, seeds, acorns, roots and barks in winter and autumn, herbs in spring and summer, and a clear increase in consumption of the human food in spring. [43] The tourist and the wild groups did not differ in the proportion of daily records devoted to terrestrial feeding, but the tourist group spent a significantly lower percentage of daily records in terrestrial foraging, moving and resting, while performing more terrestrial aggressive displays more than the wild group. There was no significant difference between the two groups in the proportion of terrestrial feeding records spent eating fruits; but the tourist group had lower daily percentages of terrestrial feeding on leaves, seeds and acorns, roots and barks, and herbs, while it spent higher daily percentages of terrestrial feeding on human food. [45]

Barbary macaques were traded or perhaps given as diplomatic gifts as long ago as the Iron Age, as indicated by remains found in such sites as Emain Macha in Ireland, dating to no later than 95 BC; an Iron Age hillfort, the Titelberg in Luxembourg; and two Roman sites in Britain. [54]

See also

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Sgt. Alfred Holmes was a Gibraltarian sergeant of the Gibraltar Regiment. He was a well remembered Officer-in-Charge of the Apes who held this position, caring for the Gibraltar Barbary macaques, for over 38 years. He described the macaques as "Gibraltar's greatest treasure".

<span class="mw-page-title-main">Northern pig-tailed macaque</span> Species of Old World monkey

The northern pig-tailed macaque is a vulnerable species of macaque in the subfamily Cercopithecidae. It is found in Bangladesh, Cambodia, China, India, Laos, Myanmar, Thailand, and Vietnam. Traditionally, M. leonina was considered a subspecies of the southern pig-tailed macaque, but is now classified as an individual species. In the 21st century, the pig-tailed macaque was split into the northern pig-tailed macaque species Macaca leonina and the Sundaland pig-tailed macaque species M. nemestrina. This reclassification was aided by the observation of sexual swellings and basic attributes that distinguish the two. The northern pig-tailed macaque is frugivorous and their social grouping is matriarchal, where sexual dimorphic traits can distinguish males and females. Their adaptation to omnivorous diets occur in periods of fruit scarcity, munching on wild vegetation and crops, human foods, and small insects and mammals. Despite their adaptability, northern-pig tailed macaques experience viral threats such as the human immunodeficiency virus type 1, pathogenic simian immunodeficiency, and coronavirus. Human impacts are also present, such as agricultural expansions, aquaculture, transportation infrastructure, hunting and logging for meat and trophies, and the illegal pet trade; that result in habitat loss, forest fragmentation, and a reduced well-being.

Allomothering, allomaternal infant care/handling, or non-maternal infant care/handling is performed by any group member other than the mother. Alloparental care is provided by group members other than the genetic father or the mother and thus is distinguished from parental care. Both are widespread phenomena among social insects, birds and mammals.

<span class="mw-page-title-main">Pic des Singes</span> Peak in northern Algeria

Pic des Singes is a peak in northern Algeria, northwest of the town of Béjaïa. It is located in the Cap Carbon area of the Tell Atlas range, on the Mediterranean coast.

The Tizguit Valley is a river-cut landform in the Middle Atlas mountain range, in the Fès-Meknès region of Morocco.

<span class="mw-page-title-main">Sexual swelling</span> Swelling of genital and perineal skin in some mammals as a sign of fertility

Sexual swelling, sexual skin, or anogenital tumescence refers to localized engorgement of the anus and vulva region of some female primates that vary in size over the course of the menstrual cycle. Thought to be an honest signal of fertility, male primates are attracted to these swellings; preferring, and competing for, females with the largest swellings.

In biology, paternal care is parental investment provided by a male to his own offspring. It is a complex social behaviour in vertebrates associated with animal mating systems, life history traits, and ecology. Paternal care may be provided in concert with the mother or, more rarely, by the male alone.

<span class="mw-page-title-main">Non-reproductive sexual behavior in animals</span> Non-reproductive behavior in non-human animals

Animal non-reproductive sexual behavior encompasses sexual activities that non-human animals participate in which do not lead to the reproduction of the species. Although procreation continues to be the primary explanation for sexual behavior in animals, recent observations on animal behavior have given alternative reasons for the engagement in sexual activities by animals. Animals have been observed to engage in sex for social interaction bonding, exchange for significant materials, affection, mentorship pairings, sexual enjoyment, or as demonstration of social rank. Observed non-procreative sexual activities include non-copulatory mounting, oral sex, genital stimulation, anal stimulation, interspecies mating, same-sex sexual interaction, and acts of affection, although it is doubted that they have done this since the beginning of their existence. There have also been observations of sex with cub participants, as well as sex with dead animals.

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