What is the official breed of a pitbull dog?

There is no official breed called "Pitbull." The term "Pitbull" is a general term used to describe several breeds, most commonly:

* American Staffordshire Terrier: This is the recognized breed by the American Kennel Club (AKC).

* American Pit Bull Terrier: This is recognized by the United Kennel Club (UKC).

* Staffordshire Bull Terrier: This breed is recognized by the AKC.

The term "Pitbull" often gets used to describe any dog that has a certain physical appearance, regardless of their actual breed. This can be misleading and inaccurate.

It's important to be specific about the breed when referring to these types of dogs.