＜性的快楽のための道具使用を調べた動物行動学の先行研究はこれまで皆無に等しい＞
Stone tool assisted masturbation in male Balinese long-tailed macaques -- Inferring functional patterns of tool use behavior from the temporal structure of object play sequences in a non-human primate species
— Alfons López Tena (@alfonslopeztena) May 25, 2020
By @Vaseylab https://t.co/6wGyOSA9TJ pic.twitter.com/wz6bzxMVMW
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