My family for the last year has consisted of me, my border collie, Cheyenne, and my kitten, Karma. I got Karma when she was two months old and she just turned a year old in June. I considered her birthday to be Murphy's birthday since the dates matched closely. A couple weeks ago, she discovered the doggie door in my bedroom (patio door) and would escape to the backyard now and then. The backyard is all fenced and she always stayed on the porch or nearby. I didn't like it, but couldn't stop it. I got her a breakaway collar, and she lost it last week. Early Thursday morning, I heard her go outside. I haven't seen her since and I'm just sick. I just spent two hours walking the neighborhood looking for her and posting flyers, but she has vanished. I don't know what to do.