There's not a lot that we can do with this information, but did you know that rats are among animals who love to be tickled? Scientists reveal that rats burst into the equivalent of rat laughter and joy when they are tickled.
Neuroscientists from Humboldt University in Germany examined rats' brain while tickling male rates in different situations. Researchers have found out that stressed-out rat doesn't like to be tickled, but that same rat will giggle when he is tickled in better circumstances. Plus, it seems they belly has a sweet spot.
Researchers noticed a particular activity in the brain and found cells that light up during tickling. If researchers stimulated those brain cells with an electrical current, the rats would behave as if they were tickled.
Animal psychologist, Shimpei Ishiyama said for the Smithsonian: "They were so excited! They were jumping around, and they chased my hand. Pretty much like human kids, giggling and chasing around."
You might be wondering, what's the point of this? Why are we spending money researching are rats ticklish. Tickling is a mystery for scientists, and there is no evolutionary explanation on why tickling is useful. Like any other research, we start our examination on rats.
Newser, National Geographic
Gildshire Editor, Elvira Barucija