Registration: With the United Canine Association American Bullies are registered as an "American Bully" not American Pit Bull Terriers.
It is the belief of the UCA that the American Bully is a unique breed from the American Pit Bull Terriers and should be registered as such and held to its own unique breed 
standard and not that of the American Pit Bull Terrier.
The UCA breed Standard for the American Bully is below.
All American Bully dogs are registrable with the United Canine Association and eligible to participate in all UCA sanctioned dog shows and events.
Click here to learn more about American Bully registration; how to register your American Bullies or to dual register your American Bully with the United Canine Association.
The United Canine Association recognized and began recording registration for the American Bully in 2009.
The establishment of today's American Bully and the breed's
early fundamental development began
in the late 1980's via the
efforts of
several dedicated breeders and their vision and goals of creating the
ultimate family companion.
The
American Bully breed evolved only through careful and selective
breeding of various bull breeds in a program designed to place
an emphasis on maintaining a loyal, devoted and steadfast
temperament, while enhancing desired physical characteristics.
As a
breed, the
American Bully is celebrated for its exceptional loyalty and
devotion to its family members. The ideal temperament of an
American Bully is very stable, dedicated, confident and is that
of an exceptional family companion.
The ideal American
Bully thrives on pleasing its owners, is highly intelligent,
very trainable and capable of performing many tasks and posses
diverse abilities. 
The modern American Bully can be seen today
excelling in many areas in society.
Physically, the perfect American Bully is athletic, yet powerfully built.
The American Bully has a solid, well defined muscular frame that
gives the impression of massive strength as well as athletic
ability.
Males are characteristically stockier and heavier boned than
females.
Their lifespan is between 10 and 14 years.
Breed Standard: American Bully
General Impression: The American Bully should
give the impression of massive
strength as well as athletic ability. A medium
size dog with a exceptionally muscular and powerful body.
Head: The head is large
and of medium length, broad skull, very pronounced cheek
muscles, distinct stop, short foreface and high set ears.
The head appears to have been chiseled, combining strength,
elegance and character. Should give the impression of
enormous power, but should not be disproportionate to the
overall size of the body.
Fault: Head too
small or disproportionate to the body.
Muzzle: Broad and of medium to medium short in length, tapers
slightly from the head to the nose.
Jaws: The jaws are well defined, square and should have a razor
sharp or chiseled appearance. Lips are close and even, some
looseness in the jowls accepted, but not to be favored.
Bite: The American
Bully has a complete set of large, evenly spaced, white teeth.
The
preferred bite is a scissor or even bite.
A reverse scissor or
slight undershot should be considered non preferred.
Fault: The badly undershot or overshot
bite is a serious fault. Wry jaw is a disqualifying fault.
Nose: Nose all colors acceptable. The
nose should be a solid color. Lacking pigment should be considered non
preferred.
Fault: A
nose lacking all pigment is a disqualifying fault.
Ears: Set high, natural or cropped. If natural, semi-prick
or rose are preferred. Pricked or flat, wide ears are non preferred.
Eyes: Round, wide apart, deeply set and of moderate size.
Any color is acceptable. However, odd eyes (one dark,
one blue or light) should be considered non preferred. Lacking pigment around the eyes is undesirable. 
Neck: The neck should appear strong and muscular, clean in outline and
gradually widening toward the shoulders. No looseness of skin. Medium
to short in length.
Shoulders: Strong and muscular with blades wide and sloping.
Body: Moderately short in length. Slight rise from shoulders to rump,
level back is just as acceptable.
Ribs should be well sprung (rounded) and the chest
wide, broad and deep.
Fault: Too narrow in the chest.
Tail: The tail is undocked, of medium length, low set, tapering to a
point and carried rather low. It should not curl much and may be
likened to an old-fashioned pump handle.
Fault: A tail that is too long, badly curled or screwed. 
Color: Any color or combination of colors is
acceptable except merle.
Coat: The coat should be smooth, short, glossy and close to the skin.
Height: Males - 17 to 20 inches at the
shoulder. Females - 17 to 19 inches at the shoulder.
Forequarters: Legs should straight, well boned and muscular. Set
rather far apart, without looseness at the shoulders and showing
no weakness at the pasterns.
Bowing,
turned out or turned in resulting in poor movement is to be
discouraged and considered non-preferred.
Hindquarters: The hindquarters should be well muscled, hocks let down with
stifles well bent with good angulation.
Legs should be parallel when viewed from behind,
turning neither
in nor out.
Feet: Round and the pasterns should be strong and tight. Fault: Down in the pasterns or splayed feet.
Gait: Free, powerful and agile with little effort. Legs moving
parallel when viewed from front or rear. The breed displays
evident power and drive from the hind legs.
American Bully 
By United Canine Association 