What is the taxonomy of a miniature chihuahua?

There is no such thing as a "miniature chihuahua".

Here's why:

* Chihuahuas are already a small breed: The Chihuahua is the smallest dog breed recognized by the American Kennel Club (AKC) and other breed registries.

* "Miniature" is not a recognized breed designation: There are no distinct breed standards for a "miniature chihuahua". The AKC only recognizes the Chihuahua as a single breed, with variations in size falling within the breed standard.

* Size variations within the breed: Chihuahuas can be quite small, but their size is often used to describe different types of chihuahuas:

* Apple head: These Chihuahuas have a rounder head shape and tend to be slightly larger.

* Deer head: These Chihuahuas have a longer, more pointed head shape and are often smaller than apple heads.

If you're looking for a chihuahua, consider:

* Talking to breeders: They can help you find a chihuahua that fits your preferences, including size.

* Adopting from a shelter or rescue: You can often find smaller chihuahuas in shelters, especially if you are open to an older dog.

Remember, size doesn't define a dog's personality or health, so focus on finding a chihuahua that suits your lifestyle and enjoys being your companion.