I know the feeling. I'm feeding/lodging one cat (On, whom you saw in my journal) and Anita, who belongs to the neighbours (who don't feed him and leave him out at night -- Don't ask why we have nicknamed a male cat Anita. Okay?)

Fortunately, I have an electronic drum set-up in my apartment and they repay me for cat food by having to listen to me blast my rhythmic experiments at top volume.