What are the *simplest* animals capable of a disgust reaction? I assume apes are? cc:
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Don't put much credence in this, but I suspect that only humans have a disgust reaction/emotion/expression.
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Other animals will find things nauseating, but won't be rewarded for alerting their peers. They'll just move along.
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(IOW, what we usually think of as disgust — the "eww, gross!" reaction — is uniquely human... I suspect.)
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Disgust has an adaptive social function but that could be based on an exaptation present in other animals
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Very easy to see how spitting out something that taste rotten is adaptive prior to a social display.
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Therefore easy to suppose the social display "plays up" if you will, the natural response, which would...
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build off the existing reflex. I therefore suspect other animals feel something very similar to disgust.
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any examples of complex social rituals around disgust in non-humans? like disgust-eating dares?
Not my expertise, but I'd be very surprised.
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