Well, not really.. There is always something going on, and he barks at very random things... The other night he just would not come down. I have my own suspicions of what it was, but he went off nuts barking, hackles, tense, the whole nine yards.. at about midnight. I made him get in bed between me and Sparkles and he was hard as a rock and shaking, ears alert, eyes wide, and he just would not calm. I finally put him out of my bed and he did it again at 4am.. Didn't freak me out per say, but I was upset that he was so scared.
J also gives his ferocious "Intruder! Intruder!" Bark if there's a cat in the yard... lol