I think the term "tea cup" means the dog is tiny enough to "fit" into a tea cup, not that the dog is a tea cup....I don't use the term myself...but when I do hear other people use it, I do know that they are referring to a smaller then average dog. I know, I know, who is to say what a smaller then average dog is...I don't have the answer to that, but still, I get the jest of the size of dog they are referring to.... Just my 2 cents
