* "Tiny acorn chihuahua" is not a recognized breed standard. This term is likely used to describe a chihuahua that was exceptionally small as a puppy.
* Chihuahua size varies. The breed standard for chihuahuas allows for a range of sizes, from very small to a bit larger.
* 13lb is not exceptionally large for a chihuahua. While some chihuahuas are smaller, 13lb is within the acceptable weight range for the breed.
To find out if anyone in the UK has a chihuahua of this size, you could:
* Contact local chihuahua breeders or rescue organizations. They might have information about chihuahuas in the area.
* Search online forums and social media groups dedicated to chihuahuas. You could ask if anyone has a chihuahua that fits the description.
However, remember that it's not ethical to judge a dog based on its size. Every chihuahua is unique, and their size doesn't define their personality or worth.