Riley is. I don't know if that means anything...

I also think he may be half crazy. He used to bark, have me say, "hush", then bark at me. Nice. Now he likes to bark to tell me he needs to go outside, to tell anyone and everyone that there is a cat near him, and to tell a dog who doesn't acknowledge him that he is there, in all his glory. He will occasionally bark to protect me (strangers/strange things or sounds outside), but Sadie's more of the guard dog. Riley's a bit wacky and unreliable about it.
Saturday night, he barked pretty much every hour on the hour to go outside to potty. He didn't have diarrhea or anything. I don't think I fed him too late or gave him too much water (I try to taper them off at night, b/c I know he will have to get up and pee). I got about 3 hours of sleep. Goober dog.
He also likes to groan and grumble. He's done that since he was tiny: If he doesn't like something-how you are holding him, that you stopped him from doing something, etc.-he will grumble at you. The day he was neutered, he did a whine/grumble that sounded pitiful.