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The animal kingdom
Dolphins were the case that settled an old argument
The question of whether animals feel pleasure had an anatomical answer.
Photo:
Tony Hisgett from Birmingham, UK
· CC BY 2.0 · Wikimedia Commons
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species with a documented clitoris
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3
species with a documented clitoris
It was assumed for a long time that non-human animals had sex for reproduction and nothing else. Dolphins have always been the awkward exception — they mate year-round, in same-sex pairings, outside any fertile window, and with evident persistence.
In 2022 a dissection study of bottlenose dolphin clitorises found large erectile bodies, an unusually dense supply of nerve endings, and thin skin over the surface — the same combination that in humans is understood to produce pleasure. The anatomy settled what the behaviour had suggested for fifty years.
Did you know
Dolphins are one of very few species besides humans documented to masturbate, to have sex face to face, and to form long-term same-sex bonds. Bonobos and some macaques make up most of the rest of the list.
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