Those baby teeth will need to be removed at least by her first birthday if they don't come out on their own.  They can cause decay to the permanent teeth.  My yorkie is not a chewer and will have to have a yearly cleaning.  Yorkies are notorious for dental problems which can lead to infections, tooth loss and other illness.   
Congratulations on your new yorkie.  You can always trim her hair yourself.  Next time, just trim off the hair with the poop on it.  Obviously that's the hair that's getting in the way.  You don't have to shave it all off.     |