What's so funny?

In this video, Dr. Jaak Panksepp describes how he discovered that rats apparently laugh, producing an ultrasonic sound which more resembles chirping than laughter as we typically think of it:

Further research by Dr. Panksepp has shown that young rats tend to be more ticklish that older rats and that "laughter" ceases when the animals smell the odor of a cat or when they are hungry. As you might expect, his findings have been debated by other scientists.

To read a recent interview with Dr. Pankseep about rat "laughter" and his theories, click here.

Sources:
Scientific American

http://falk.mccormick.northwestern.edu/doc/07LaughingRatsPlayfulTicklin…

More like this

Welcome to Grand Rounds at Aetiology! Grab a cup of joe, take a seat, and enjoy the best of this week's medical blogging. Just make sure to wash your hands when you're done...you never know what's lying around here, between the kids, the dog, and the lab... First, a programming note. Just a few…
Today was a busy day. I was somewhat surprised at how shy people are of the little Flip camera - so much worry about the future career prospects if one does something seemingly 'unprofessional' like say a couple of words about one's research for the Lindau YouTube channel and my blog. But see the…
I realize it's fundamental to being a crank, but the persecution complex of the IDers is getting really old. The latest is Bruce Chapman at Evolution News and Views, who no longer satisfied with grasping at the mantle of Galileo, is now groping for Semmelweis and Lister as well. The idea being,…
tags: encephalon, brain, behavior, cognition, neurobiology, blog carnival The last frontier: The brain. Orphaned Image. Contact me so I can provide credit and linkage. Several months ago, I was invited to host Encephalon, probably because I send so many submissions to this blog carnival and…