Welcome to YT, Chris! Would love to see pics of Dexter.
You'll hear this a lot so I may as well go ahead and let you know that the term "teacup" is just a term that some ruthless breeders made up one time to sell under weight dogs for a lot of money. I understand that you are using the term to just describe Dexter's size. Before I came to the forum, I thought it was a real catagory of dogs but then I learned that it's not. Yorkies are all in the toy group but there really isn't a such thing as a teacup catagory of any breed - I swear, I learned a lot my first day here and I still learn everyday. There are so many great and knowlegeable people here.
I am so very happy you found us! Jump right in, but I warn you - it is addicting