Those of you who live in an urban centre, do you think the rightful place of the animal is in the countryside ? Do you think that dogs are simply kept at the whim of lonely citizens ? That cats should not be allowed to roam the streets ? That there should be no more cockroaches to invade homes ? Yet, do you really want a city without nature ? Without green areas, but also without animals ? A sterilised city in other words.. Nathalie Blanc analyses here the role of the animal, and thus the living, in our urban societies. Nathalie Blanc is a researcher specialising in urban geography, at the Centre National de la Recherche Scientifique.