I learned the hard way with my German Shepherds and made no mistake with Lucy in this area. No play biting-ever. I will play tug of war with Lucy but if she goes into biteface mode (as we call it around here) all playing stops with a firm No. Same thing for attention biting/barking. If she barks at me she also gets a NO. As cute as it can seem it can also turn in to a bad habit that is hard to break. I gave in with my Shepherds and it became an issue...
I have caught Thomas (DH) playing bite hand with her and he gets a firm NO! every time I catch him.
She is spoiled rotten but biting, nipping and barking are things we don['t tolerate around here....
Best of luck to you
