I am having a bit of trouble grooming my gsd she is coming up to 4 months old, up until about a week ago she would sit on my lap with a toy and I could do It really easy but now she just runs off all the time. She is long haired and looks abit of a mess if I don't do it every 2 says or so. I just don't want it to become a problem as she gets older. any tips or advise will be much appreciated. Thanks.