Originally, my friend who shows posted this on Facebook. I learned about teacups from her and her other show friends. They told me that when there is a runt of the litter, they have bred other runts and that is the reason for the name cause they can fit into a teacup. I have seen Yorkies 12-15 pound and couldn't believe that they were true and full-blooded Yorkies. They were small and weren't suppose to get as big as they did she told me. I think all Yorkies are cute no matter the size