Thanks everyone. I wasn't worried just not a B noise I was familiar with and wondered if anyone else's pups made this noise. My first female B snored loud enough to wake the dead at four months but not this odd little noise. It's quite handy as I know exactly when she's down for sleep.
Heard her first barooo last Saturday welcoming us home from the Saturday market. And she experienced her first earthquake this morning. OY!
Ring bone is nothing more than soup bone, not a knuckle. Leg bone with marrow in the center cut to about 2 inches long. When it has been chewed dry and empty, try smearing PB or cream cheese inside, not filling it up just a smear. Believe it or not they sell for about 4$ for six here in the Midwest. Oh well