Laughing Rats
One of the best radio shows currently running, Radiolab, recently did an episode on laughter. In addition to the apocryphal-sounding Tanganyika Laughter Epidemic, the show also covered the debatable existence of laughter in non-human animals. Apparently, there is a scientist who tickles rats for a living. Are the rats laughing? You be the judge.
[Click here to see rats getting tickled]
[Click here for the Radiolab episode on laughter]
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Header photograph by Jenny Huang