Female–female sexual behaviors have been recorded in many species across several taxa, but their infrequency except in a few species has resulted in continued speculation about their function and potential evolutionary consequences. Here, we report two observations of female–female mounting in wild puma populations representing two sub-species from opposite ends of puma range. We believe our observations provided support for the social glue hypothesis and dominance in same-sex hierarchies, but not for surrogacy in the absence of a male or as a means to stimulate and encourage male partners to copulate.

中文翻译：

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美洲狮的雌性-雌性镶嵌

雌性与雌性的性行为已在多个分类群的许多物种中被记录，但除少数物种外，它们的频率不高，导致对其功能和潜在进化后果的持续猜测。在这里，我们报告了在代表美洲狮范围两端的两个亚种的野生美洲狮种群中雌性-雌性增加的两个观察结果。我们相信我们的观察为社会胶合假说和同性等级制度中的主导地位提供了支持，但不支持在没有男性的情况下代孕或作为刺激和鼓励男性伴侣交配的手段。