It seems you might be mixing up two different dog breeds:
* Pit Bull: This is a general term often used to refer to certain breeds like the American Staffordshire Terrier, American Pit Bull Terrier, and Staffordshire Bull Terrier. These breeds are known for their muscular build, strong jaws, and generally friendly personalities.
* Whippet: This is a sighthound breed known for its sleek, slender body, long legs, and incredible speed.
While these breeds are both athletic and have a certain "cool factor," they're quite different in appearance and temperament.
If you're curious about a specific type of dog, let me know the breed name, and I can give you a description.