When Animals Attack

At home, a large house in small town southern Ontario, I had a large upstairs room with three large windows. My bed was usually positioned in the far corner, a corner of two outside walls. There were squirrels, possums, raccoons, coyotes, or bears in the attic right above my bed. For the last couple of years that I lived there I could hear animal sounds. Mainly them eating the beams above my head. I had terrible visions of these wild (and possibly rabid) animals eventually crashing through my ceiling onto me in bed. Now here, in Le Manoir the huge house in the city, I have animals near my bed again. The are in the outside wall at the head of my bed, right behind me as I sleep. I know they are smaller, cause we are in the city, and because the space inside the wall isn't big enough for a bear or even a raccoon. I don't hear much chewing, alot of running, scratching, and general animal noises. I think it is mice, chipmunks, or squirrels. I'm not as scared anymore, just unimpressed, can't nature just leave me alone?