My girl used to do that too, but only when she was a couple of months old, and only if she knew where I was but couldn't get to me. Like if I was sitting in my living room.....she would look at me from the gated kitchen & walk on her hind legs back & forth along the gate, whimpering the whole time. She wouldn't do it if I wasn't home - I frequently asked my tenants if they ever heard her. They said 'only when you pull up out front & she knows you're home'.
What I did to stop it was reward her silence, both with food AND freedom (Allowing her to come in the room with me, since that's what she REALLY wants......but ONLY after substantial periods of silence! Which is what I REALLY want! LOL...) 5-10 minutes usually did the trick. She quickly learned the 'secret' to her freedom. Eventually, she learned all the other 'secrets' I had and was granted total freedom in the house at all times & has been the best, most well-behaved dog I could've ever hoped for!
Keep in mind, Rottweilers are extremely 'pack' oriented & cannot fathom the thought of being away from those they love!
Good luck.........
