Arnold Bdot --- Protecting us from WHAT!?!

I'm minding my own business, watchng tv, doing stuff on the computer.

I hear Arnold's "dangerous" growl. What could it be?

He has a book sox in his mouth and he's growling. I go to take it from him, he grabs it between his teeth and dashes into the laundry room. He drops the book sox and stands guard over it. And growls a little. He is NOT happy when I take it.

Now, Mr. Dangerous Arnold is chasing his tail while on the 3-people couch. EVERY TIME he grabs hold of it he falls off the couch and scares himself half to death. He's done it at least three times. When will he figure it out???