When I consider that our pets completely rely on us, it makes sense that they might have a fear of the unknown. They sense clues that something is different, but have no knowledge of what or for how long.     Over the last three years, our dog has been a bit spoiled by the fact that someone, mostly me, has been in the house 24/7.  Our dog saw my suitcase and started to get a bit clingy, knowing something was up.  One of my neighbors takes great care of her when I am away, but it has been numerous years…