The Rat that Laughed

[GormanGhaste]

The July 2012 issue of Scientific American has an animal behavior article on laughing in other species. I couldn't find it on-line, but here's a link to an earlier article on the same subject by the same author. The current article is adapted from the author's book that will be coming out in July. I know we have a lot of members who have or have had rats, so I thought it might be of interest.