Rat Laughter

Can rats laugh? From Tierney Lab: http://tierneylab.blogs.nytimes.com/2007/03/18/what-happens-when-you-tickle-a-rat-see-for-yourself/ Posted for http://thegoodreverend.blogspot.com/2007/03/humans-arent-only-ones-doing-it-rats-do.html

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YouTube | March 19, 2007

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