Yes, ....all of mine are service dogs or are in training to be service dogs. It is really a life long training process and has wonderful benefits for the dog and the owner.
Small breeds make the best service dogs because they are so easy to travel with and yorkies are a very popular breed for service dogs, but my Westie and my standard poodle are service dogs also.
There are a lot of threads on YT that give all of the info. Here is one link:
http://www.yorkietalk.com/forums/sho...t=service+dogs
When you read the thread you will see that some people had a problem with me talking about service dogs for some reason that I do not fully comprehend so I am a little shy about it now

, but I am happy to help anyone who wants more info and contacts me by PM. I have helped quite a few members with qualifying disabilities get their dogs recognized and/or trained as service dogs under the law. It's very easy to do and I am always happy to help.