Here's why:
* No Official Bloodlines: Pit Bulls are not a recognized breed by major kennel clubs like the AKC or UKC. This means there are no official breed standards or registered bloodlines like you might find with other dog breeds.
* Variety in Lineage: Pit Bulls are often the result of mixing various terrier breeds and have diverse lineages. There's no specific line called "York" that is recognized or consistently bred.
* Misinformation: The term "York line" might be used in some local circles or online forums, but it's likely not based on a specific or established lineage.
Important Note: While it's interesting to explore lineage, remember that the focus should be on the individual dog's temperament and health, rather than an assumed line or breed.