It's called the "teddy bear dog." Half shih-tzu and half bichon frise. In Canada we refer to the Shih-Tzu and Bichon Frise cross as Mollydogs instead of teddy bear dogs. I have two of them and they are wonderful.
Munchkin the Shih Tzu is mainly dog.a little bit of teddy bear.and COMPLETELY adorable! Make a teddy bear costume just hers for your pup! I don't know about you, but the costume makes the little guy look like an Ewok !