Mackenzie went on walkabout for almost a week, bolting out the door on a Tuesday evening and showing up back on the couch (knocking in the broken cat door) on Monday morning. We were all quite worried and Fraser kept wandering about looking for him and being confused when he wasn't there. He came back quite OK - a little thinner (not a worry with this one) and very tired. This is on Monday - Fraser's saying, "don't you dare worry me like that again."