05:5005:50, 29 June 2012diffhist+255
Laughter
*[http://www.scientificamerican.com/article.cfm?id=rats-laugh-but-not-like-human Rats Laugh, but Not Like Humans. Do animals other than humans have a sense of humor? Maybe so.] June 22, 2012
Scientific American
05:5005:50, 29 June 2012diffhist+255
Laughter
*[http://www.scientificamerican.com/article.cfm?id=rats-laugh-but-not-like-human Rats Laugh, but Not Like Humans. Do animals other than humans have a sense of humor? Maybe so.] June 22, 2012
Scientific American