it may be a sign of structural problems; it may simply be, as others said, a sloppy or lazy sit.
a photo will be enlightening, i'm sure - but please TAKE THE PICTURE from the dog's level, not looking
down on her, but looking 'across' at her... one from the side & if possible, one from the front, as well?

fingers crossed it's just a puppy relaxing.

__________________
terry pride, APDT-Aus, apdt#1827, CVA, TDF
*wolves R wolves, dogs R dogs, + primates R us.*
tmp, sept-2007