i heard scritchy scratchy rat sounding noises inside or on my wall. started earlier tonight. i havent actually seen any rats. Shortly after i heard the noises, i stepped outside then came back in to discover Yuki did not get put back up. (oops!) he is fine, no signs of distress or injury, but I'm curious. if he did come in contaxt with a wild rat, is there anything that could happen to him? also, with the slight risk of him being in contaxt with a wild rat, can he go back in the cage with his 14 cage mates?