Well, I am very afraid of spiders, and centipedes, and insects in general, but I don't think it's a phobia. Like, if I see one on the wall across the room, my pulse might rise a bit, but then I'll settle down really quickly, but then if it moves, my pulse will go back up again. Their quickness does have alot to do with it. Also, here's an example of something I did. I walked into my room one day and saw a centipede crawl under my bed. I spent the next 1/2 hour perched on a chair trying to see where it was, and if I could sneak out of my room to get someone to kill it. Would that be a phobia?