Very cute - and good catching it on video! In my house, Ruby barks in her sleep quite often and so does Liyah - but I've never heard Brando or Oz do it.
I love how your two curl up together like that. Rarely does Ruby allow Brando to as much as touch her while resting - and in fact I've seen her stare him away. With my other two - Liyah prefers to sit/lie on top of Ozzy - but he loves her so much, he doesn't care.
Lenny is always trying to get closer to Tayda. His favorite place is to be on top of her. I don't know why I bother buying two dog beds, one ends up being empty and they are both crammed into the other. She is quite tolerant of it, I think she just likes the warmth.
Sometimes Lenny barks in his sleep also, it's so hilarious.