Let’s just say that you want to show your Chihuahua. There is a certain “breed standard” that your Chi will be judged on.
A breed standard is essentially a “blueprint” for the individual breed to fit for the function in which it was bred (herding, tracking, etc.). The standard is not “set in stone,” and can vary in different associations and countries. It is just a guideline for what Chihuahuas should look like.
Here is the Chihuahua breed standard: