Yes, bonobos sometimes show sociosexual contact after conflicts, but “make-up sex” oversimplifies what researchers have observed. Post-conflict affiliation can include embracing, touching, and mounting, and it does not mean that every conflict ends with sexual contact.
Researchers distinguish reconciliation between former opponents from consolation offered by a bystander to a victim. These behaviors vary with social context and relationships; the evidence does not show that sex alone resolves conflict.
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What scientists mean by bonobo “make-up sex”
“Make-up sex” is an informal human phrase. Researchers studying bonobos describe post-conflict affiliation, reconciliation, consolation, and sociosexual behavior.
- Reconciliation is affiliative contact between animals who were recently opponents in a conflict.
- Consolation is affiliative contact initiated by a bystander toward a victim who was not the bystander’s opponent.
These categories describe who interacts and when. The contact can be sociosexual, such as mounting, or non-sexual, such as embracing or touching. The same behavior should not be assumed to carry the same meaning as sex between human romantic partners.
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The measured conclusion is that bonobos sometimes use sociosexual behavior as part of a broader social response after conflict. It is not accurate to say that they settle every disagreement through sex.
What bonobo studies found
In a 2013 study, Zanna Clay and Frans B. M. de Waal observed 36 semi-free bonobos at Lola ya Bonobo Sanctuary in the Democratic Republic of the Congo. Using a standardized post-conflict and matched-control method, they documented reconciliation and consolation, including affiliative and sociosexual behaviors such as embracing, touching, and mounting. Read the study in PLOS ONE.
Bystanders were more likely to contact victims after conflicts than during matched control periods. Post-conflict affiliation was especially common soon after a conflict, with the study reporting a peak in the first minute. Whether consolation occurred was associated with factors including proximity, the bond between bystander and victim, age, and rearing. These findings describe variation in the observed group; they are not rules for every bonobo or community.
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An earlier study by Elisabetta Palagi, Tommaso Paoli, and Silvana Borgognini Tarli examined 167 pairs of post-conflict and matched-control observations in a captive bonobo group in Apeldoorn, the Netherlands. It found that close relationships positively affected reconciliation and that sociosexual patterns were prominent among consolation contacts. The authors cautioned that the limited number of studies did not support broad generalizations. See the study record in PubMed.
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Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Together, these studies show that post-conflict contact can take several forms and depends on context. They do not establish that sexual contact by itself resolves conflict or that every bonobo group responds the same way.
Bonobos are not simply the “peaceful” opposite of chimpanzees
Bonobos experience conflict. Research about their post-conflict behavior concerns what sometimes happens afterward, not a conflict-free society.
A 2025 comparative study examined genital and non-genital affiliation among sanctuary-living bonobos and chimpanzees during post-conflict and pre-feeding tension. Its abstract reports both bystander-to-victim affiliation and reconciliation after conflicts. This offers comparative context, but it does not support a simple contrast between sexually peaceful bonobos and violent chimpanzees. See the study record in PubMed.
What the bonobo comparison can—and cannot—tell us
Bonobo research shows that social animals may respond to tension with different forms of affiliation, including contact between former opponents and support from bystanders. But an animal behavior study is not a guide to human relationships, and the phrase “make-up sex” can obscure the different behaviors and social roles being studied.
For people, physical intimacy should never be treated as a substitute for consent, safety, accountability, or addressing a conflict. Both partners must freely want it; it should not be used to pressure someone into forgiveness or to avoid discussing harm.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
Do bonobos actually have sex after arguments?
Researchers have observed sociosexual contact after some bonobo conflicts. They have also recorded non-sexual affiliation, including embracing and touching, so “make-up sex” is too narrow a description.
What is the difference between reconciliation and consolation?
Reconciliation is affiliation between former opponents. Consolation is contact a bystander initiates toward a victim who was not the bystander’s opponent.
Does post-conflict sexual contact prove that bonobos resolve conflicts through sex?
No. Studies document varied post-conflict behaviors and show that contact depends on context and relationships. They do not establish that sex alone resolves conflict or that every conflict is followed by contact.
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Are bonobos peaceful because they use sociosexual behavior?
No. Bonobos have conflicts. Their post-conflict behaviors are varied, and research does not support a simplistic picture of bonobos as conflict-free.
The bottom line
Bonobos sometimes engage in sociosexual contact after conflicts, but researchers also observe non-sexual affiliation, and not every conflict leads to contact. “Make-up sex” is a catchy shorthand, not a complete account of bonobo social repair. The findings describe observed animals and contexts; they do not show that sex alone resolves conflict or offer a formula for human relationships.
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