Dare-Devil Dog

I didn't know my dog would be a dare-devil, excitement-seeking animal when Zack and I decided to buy him. He was friendly enough at first- playful and happy. We soon found that he was afraid of anything new, strange, or loud. He doesn't like fireworks. He doesn't like strange objects left on the floor, and he doesn't like tight spaces. He's slowly overcoming his fears as he grows accustomed to his world. He was afraid to go down our stairs at first. Now he bolts down them with no thought that his feet could at any moment slip out from underneath him and send him sprawling, head-first, to the bottom. He is unafraid of a few other things also. He's not afraid of a ball coming straight for his head. He merely stares, curiously, at it until it smacks him in the nose. Then he tries to bite it...a little too late. He's not afraid of running head-long into cement steps. He's definately not afraid of the basketball.
I've found out recently that not only is my dog not afraid of things now, but he likes creating exciting, tense-filled situations.
Let's talk about vacuuming. Maxwell loves it when I vacuum for some reason. It's like it's his oppurtunity to prove how fearless he can be. He'll jump in front of the vacuum and then spring away as it comes near him. (He used to bark at it and run away. I guess he's overcome his fear.) He'll do this almost the whole time I vacuum. When I'm finished, it's as if the pride of winning the tournament-- Maxwell VS. The Vacuum-- gives him renewed energy and he spends the next 2 or 3 minutes racing around the house until I send him outside.
Well today I was vacuuming the living room when Maxwell ran in and placed his precious chewed-up cow on the floor, right in the path of the on-coming vacuum! He stood there tensely for a minute, until the vacuum was inches away from his Precious, then he snatched it up and ran away. He came back to try it again seconds later.
I guess now the thrill of putting himself in danger isn't enough. He must risk the life of his precious cow in order to get the thrills he needs to survive.