However, it's important to note:
* "Teacup" is not a recognized breed: It's a marketing term that can be misleading.
* Breeding for extreme smallness can be harmful: Small size can lead to health problems like hypoglycemia, heart problems, and fragile bones.
* Ethical considerations: It's important to choose a reputable breeder who prioritizes the health and well-being of their dogs, not just their size.
Instead of focusing on the "teacup" label, look for a healthy, well-socialized Chihuahua from a responsible breeder.