It's been a few years since I played, but I think Clowns can remove ghosts which are haunting houses.
As for posession and zombies, I think all you can really do is keep your wits about you.
Since we're talking about dogs here, I played this a game a lot when I was a teen and never worked out what I was supposed to do about people complaining about the Dog escaping.
I even remember calling the hint line or something and being told I was supposed to put in a gate or something. But they don't exist. :/
Oh, though while I'm here I'll mention I always built my factories with enough space to put a guard dog in the yard. You can do the same for the HQ, but put the house near your building entrance and away from the street entrance or your dog won't have time to intercept any thieves out to steal your money.
Post edited April 06, 2012 by SapphireBullets