Video shows chimpanzees find human yawns contagious

Discussion in 'Off-Topic' started by truebluefan, Oct 20, 2013.

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    truebluefan Administrator Staff Member Administrator

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    [video=youtube;OKmYakYN6Tw]http://www.youtube.com/watch?v=OKmYakYN6Tw[/video]
     
    truebluefan, Oct 20, 2013
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