There are many reasons why pets prefer to go into hiding around Halloween, as evidenced by the many weird and wonderful costumes in which their owners dress them. While we get hearty laughs from the various get-ups we see through our never-ending email photos, one really has to wonder how good all this fussing around can possibly be for the animal companion. No matter how serious a person may be, seeing some of these pet costumes can really make one laugh out loud.