I have often wondered what dogs are dreaming about. You can always tell when they're dreaming - their legs twitch, sometimes they move to make it look like the dog is sleep-running, and sometimes they bark and growl in their sleep.

But this dog is doing something I don't think I've ever witnessed before. 

Is she barking? Crying like a human? It's really hard to tell. All we know is that Daphne here is having quite the dream.

I'm pretty sure that she's actually barking, but that's a sound unlike any bark I've ever heard.

Is your dog a "vocal" sleeper?