Mes Voisins?

I think someone is occupying the apartment next to mine. This is a new development, as for at least the past 5 months, I've heard no noises from within the apartment, seen no signs of life, and not heard people walking past my apartment (which they have todo to get to the next one, unless they can fly).
Right now I can hear human, high-heeled, steps outside, and either a small dog, or a very strange yappy child.