Non-human animals engage in non-reproductive sex.

the verdict

SUPPORTED

the evidence backs this

Recorded sources

2 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Extensive research across various mammalian and animal lineages demonstrates that non-reproductive sexual behaviors, such as same-sex mating, are widespread and play adaptive roles in social bonding and conflict reduction.

The analysis

The claim is specific, empirical, and contestable. Papers [2] and [11] provide direct evidence and evolutionary frameworks supporting the occurrence of non-reproductive sexual behavior (same-sex sexual behavior) in animals. The remaining papers focus on standard reproductive physiology or behavior without addressing non-reproductive sex.

Evidence for · 2

Same-sex sexual behavior and selection for indiscriminate mating

Recorded source metadata

Brian A Lerch, Maria R Servedio. Same-sex sexual behavior and selection for indiscriminate mating. 2020. https://doi.org/10.1101/2020.08.12.248096

The paper discusses the widespread presence of same-sex sexual behavior across the animal kingdom, noting it as a form of non-reproductive sexual activity that is maintained by selection for indiscriminate mating strategies.

Source citation format

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More for · 1

The evolution of same-sex sexual behaviour in mammals.

Recorded source metadata

José M Gómez, A Gónzalez-Megías, M Verdú. The evolution of same-sex sexual behaviour in mammals.. 2023. https://doi.org/10.1038/s41467-023-41290-x

This phylogenetic analysis explores the evolution of same-sex sexual behavior in mammals, confirming that non-reproductive sexual interactions are prevalent in many lineages and serve adaptive social functions.

Source citation format

The paper trail · every fact has a biography

first checked31 Jul 2026

judged → SUPPORTED · 7531 Jul 2026

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