I say chihuahua for sure, or a big part of a mix, I have raised 6 chihuahua pups, and that cutie looks like my pups, which are almost 5 years old.
That is definatly a chaweenie. I have a pic of a one. He looks exactly like yours. a chaweenie is a doberman (weenier dog) and a chihuahua mix. hope this helps
I believe this is called an apple head chihuahua. At least he looks like my mother's dog and she was told that's what he is.
Looks like he might have a little chihuahua in him. Have you checked with a vet? He sure is a major cutie.