I'm not 100% sure what CeCe is entirely. Our best guess is a Rathuahua. I'm thinking 25% Rat and 75% Huahua. That 25% could also easily be Toy Fox as well. She is pretty big for a pure bred Chihuahua and has a lot of small terrier features (longer head, slightly longer legs, extra cuteness, etc). I don't see many papered Chis that look like CeCe, even though she was sold to us as a Chihuahua, more people think she is a terrier first.
Bart