Using the same techniques as you would to find out about your own ancestors, you can test your dog's DNA, but you might not like the results. Phyllis Von Saspe of New York wanted to know if her $1,700 designer dog Emma really is a Shorkie, a mix of Shih Tzu and Yorkie. So she had the dog's DNA tested. Emma, who was purchased from a breeder in Washington State, is not a Shorkie at all. She's part Shih Tzu and part Pomeranian, according to her DNA analysis.