Yucking it up not exclusive to humans

by Anonymous on Jan. 02nd, 2008

Laughing it up: Not just for humans anymore.
Laughing it up: Not just for humans anymore.Courtesy premasagar
A new study of contagious laughter among orang-utans could mean the emphatic response evolved from an ancestor common to both humans and primates.

This comes on the heals of the recent post about testosterone's link to humor. That's funny.

Well, maybe.

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