Bentley does the "chattering" thing as well. Not really growling but more of a "mumbling under his breath". He will make a few whiney sounds (at various frequencies) as well. He does this whenever he wants attention and EVERY time I go to the restroom. Apparently I need "someone" to speak to me in order to be able to use the potty. Also,
and the only time he really does this consistently is when I am on the potty, if I fake sneeze, he will fake sneeze right back at me.

It just cracks me up every time

Restroom time has become so much more entertaining since he joined my life.
Peggy (a.k.a. Bentley's Momma)