Is there a breed of cat called Mesopotamian Blue?

There is no officially recognized cat breed called "Mesopotamian Blue." This name is not associated with any existing breed in cat registries like TICA or CFA.

It's possible that this name is used informally for a specific cat with blue fur living in Mesopotamia or a cat with a distinct appearance that someone has given that name.

If you're interested in learning more about cat breeds, I recommend checking out resources like:

* The International Cat Association (TICA): [https://www.tica.org/](https://www.tica.org/)

* The Cat Fanciers' Association (CFA): [https://cfa.org/](https://cfa.org/)

These organizations provide information on recognized cat breeds, their history, and characteristics.