Rats Laugh When Tickled, Scientists Say (VIDEO)
How do you get a rat to laugh? Telling a joke won’t work, but scientists say a rat will laugh when tickled—and they’re not joking.
One of the most cited studies on this interesting animal behavior comes from Dr. Jaak Panksepp, professor of veterinary and comparative anatomy at Washington State University in Pullman. A video of him playing with rats shows his findings (see above).
When Dr. Panksepp tickles rats’ bellies, the animals appear to laugh, and their giggly behavior suggests that humans aren’t the only mammals with emotional lives, he told The Huffington Post.