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by cacarr
1846 days ago
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"In the animal world bare teeth are considered to be a threat. Hence I think there is some instinctive fear of bare teeth built into our social perception system." Except a human smile is more akin to a canine's greeting/appeasement grin. And much more so like a Chimp's play grin. There are toothy displays in mammals that are not threatening. |
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