What is the worlds smallest Yorkshire Terrier?

It's impossible to definitively say who the smallest Yorkshire Terrier in the world is. There's no official record kept for this, and it's likely that many tiny Yorkies are born and never formally measured or registered.

However, the Guinness World Record for the smallest dog (not specifically Yorkshire Terrier) is held by Miracle Milly, a chihuahua from Puerto Rico. She measured just 9.65 cm (3.8 inches) tall in 2013.

While there might be Yorkies even smaller than Milly, it's impossible to confirm without a record-keeping system for this specific breed.

It's important to remember that size isn't everything when it comes to pets. It's more important to choose a dog that fits your lifestyle and has a healthy personality, regardless of its size.