PARIS: It has black button eyes and long, thin whiskers that tremble when it looks around curiously. Unlike most rats, this one has a name, Plume, and gets to enjoy the rare privilege of wandering around Paris on the shoulder of its owner, a local politician. Gregory Moreau, a Paris district deputy mayor, is on a mission to reconcile residents with the capital’s population of rats which, it is said, outnumber the inner city’s two million human residents by a big margin.