In TierneyLab, John Tierney follows up on his report in the Times's Science section regarding the nature of human laughter (previously blogged here) with the news that laughter might not be unique to humans. If chirping when you are tickled counts as laughter—and Jaak Panksepp of Washington State University is putting together evidence that suggests just that—rats have been laughing for some time, but we just couldn't hear it until now:
Link. Meanwhile, Discover Magazine has a rundown on twenty pieces of rat trivia. Sure, they may laugh, but at least we can sweat.
Indexed by tags science, nature, neurology, laughter, rat, tickle, chirp.