What can I do to make my Shih Tzu fur grow longer and thicker like Nahla’s?

  Answer:  We are not doing anything special to make Nahla's hair grow longer and thicker. We got Nahla when she was seven weeks old.  We did not take Nahla to the Groomer until all her shots were done at sixteen weeks old, so her hair got really long and appeared to look really thick. …