No I wasn't suggesting feeding it, and you guys have offered some good advice as to why not. We had a baby field mouse live in our car for a few months.. (we lived on a farm so grain was always getting tracked in). When we finally caught it we gave it its own home (away from our other rodents). The only other option was to kill it (we could not just let it back out onto the farm because its considered a pest). There have been reports of people developing relationships with what were once wild rats. I know my uncle found a baby mouse in his apartment in NY, he kept "mousey" and it would ride around in his pocket wherever he went. It was just a thought.