my siser in law and my husband brother have bought a gsd and she says it bites her all the time just her no body else as taking it for training  as done what they have told her we have given her advice but she says it still is mouthing her my husband brother is ok with it we have had them all our life she says she as not the voice to tell it what to do it is only 12 weeks old i am really worried if she leaves it what will happen as any body got any advice that i can give her she does not seem to listin they bought a cage and when it bites her they put it in there told her that is wrong as that is were it sleeps and it will think it is a punishment can any body give any advice

There are hundreds of posts on this subject on this forum. If you run a search using the facility, you will gain access to every tip and point of view you can imagine :)