Hi,

American pit bull terriers are a breed. 'pit bull' is not one.

From http://www.pbrc.net (Pit Bull Rescue Central)
*”Pit bull” is NOT a breed. It's a generic term often used to describe all dogs with similar traits and characteristics known to the public as "pit bulls." When we use the term “pit bull” here, it should be understood to encompass American Pit Bull Terriers, American Staffordshire Terriers, and Staffordshire Bull Terriers.


American Pit Bull Terriers are a breed of dog.
http://en.wikipedia.org/wiki/American_Pit_Bull_Terrier

They are my favorite breed of dog, including other 'bully' breeds.

Miniature Bull Terriers are linked in the 'pit bull' group, I think. But not mixed with American Pit Bull Terrier if that makes sense.