Let's say that a friend asked you if you could pop over his apartment and feed his cats while he's on holiday. The first two days are fine, but on the third day you notice that one of the cats has gone...missing? After scouring the apartment and coming up empty, you notice that your friend had left one of the windows cracked open before he left. "Oh SH--!"In this scenario, what's the proper call to action? Do you start banging away on the neighbors' doors and papering the neighborhood? Immediately call your friend to let him know or wait a few hours after circling the building and streets? Spend the night at the apartment in hopes that his cat will find his way back? Please, readers, weigh in with your advice!