Hi Tabby:
I saw yesterday (before you changed it) that you live in Somerset, Ky. (I also live in Ky., by the way.) I went to Craigslist this morning and saw that there is a lost Yorkie in your area.
Here is the link.
Missing Dog-Diabetic
Is this the dog you found? (Both males, by-the-way.) If so, I hope you will contact the owners. Sounds like he very much needs his medicine, poor thing.
Thanks so much and have a good day.