I got Dodger from a foster service that took dogs from kill shelters. I have never regretted getting a mix breed rescue dog.
Chihuahuas and Chihuahua mixes are incredibly intelligent and make great companions. Chihuahua mixes have fewer health problems and when buying a Chihuahua, go for a larger one because the tiny ones get sick fast.
My dog has a bit of Chihuahua in him. You can definitely see it in his tail.