Welcome to Yorkie Talk. I have never heard that trimming hair during puppyhood could negatively affect the texture of the adult coat. I do believe that is all genetics. Often Yorkies will have a puppy coat through most of their first year, so trimming is actually beneficial.
I'm glad the first groomer was honest with you that they intended to cut and shave. Some just go ahead and do it.
__________________ Kristin, Max and Teddy  |