Dog bites can be serious and even life threatening.
Yorkshire terriers are not aggressive by nature, but through improper breeding techniques many Yorkies now have a reputation for biting.
Having any dog that bites is a problem that must be dealt with immediately.
Here are 3 things to consider if your Yorkie has begun to bite.

• If your Yorkshire terrier is younger than six months old, make sure that she has exposure to other dogs.
  Dogs are social animals and must have time to interact with other dogs in order to learn proper behavior.
  Just like with young children, dogs learn and model behavior from other creatures.
  Other dogs will let your Yorkie know if she is biting too hard when playing.
  
• When you play with your dog, do not allow her to bite you.
  Tell her in a firm voice to stop, using single syllable commands like "No!" or "Stop!" Then put your dog into the crate or enclosure that you use for training.
  Leave your dog there for at least five minutes.
  Dogs have very short attention spans, so they will not remember what they are being reprimanded for after a few minutes have passed.
  
• When your dog first bites someone seriously, take a look at the circumstances that led up to the bite.
  Was your dog provoked in some way? You will want to figure out if this was a one time occurrence or if your dog has become a biter.
  

Proper training can cure most dogs from biting.
It is worth it to take the time to learn how to break this unacceptable habit.
Train your Yorkshire terrier early to avoid this situation as she gets older.