- Origin dates back to the 9th century;
- Religious symbol to the Aztecs;
- Ancestor is said to be the Techichi, a dog with no bark;
- Smallest dog in the world, with the Tea Cup the smaller Chihuahua;
- Chihuahua pups are the size of guinea pigs;
- Chorkies = Chihuahua and Yorkshire Terrier cross;
- Jackhuahua = Jack Russell and Chihuahua cross.