Add Yahoo as a preferred source to see more of our stories on Google. A rat king displayed at the University of Tartu Natural History Museum in Estonia. Some have claimed that the phenomenon in which ...

When the cat’s away, to paraphrase an old cliché, the rats will play. Neuroscientist Jaak Panksepp, working at Washington State University, has devoted a decade to watching that play. And from those ...

Since at least the 1500s, people have been mesmerized by the legend of a so-called “rat king.” Usually depicted as a mass of a rodents with their tails tied in a knot, the specific details can vary by ...