Head :  Medium and high, slightly sunken between the eyes (medial furrow). 
The circumference of the head should be equal to or greater than the dog's height at the shoulder. 
Fault :  Head too small.

Muzzle :  Broad, deep and short.  The bite is even or slight under bite.
Fault :  Muzzle too long (more than 3 inches), too undershot of a bite.

Eyes :  Wide apart and of moderate size.  Any color is acceptable.

Nose :  Wide and broad.  The nose should not be pushed up between the eyes.
From the stop to the end of the nose must be at least an inch and a half. 
Fault :  Completely pink nose (a small amount is acceptable).

Neck :  Medium to short and very muscular.

Chest :  Ribs should be well sprung (rounded) and the chest wide and deep.
Fault :  Too narrow in the chest.

Back :  Short with a slight rise from the shoulders to the rump (level back is just as acceptable).

Legs :  Forelegs should be stout and wide apart, neither bowing out or turning in.  Fault :  Bowing or turned out resulting in poor movement.

Feet :  Round and the pasterns should be strong. 
Fault :  Down in the pasterns or splayed feet. 

Height :  Males - 14 to 18 inches at the shoulder.  Females - 14 to 17 inches at the shoulder.
 

Weight :  Between 20 to 45 lbs.  
Fault :  Dogs above the standard weight. 

Color :  Black, black and white, red, brindle, blue and fawn.  All colors can posses various amounts of white.  The coat should be short and smooth.

Ears :  Short either naturally erect, drop or rose.  

Tail :  Must be docked, of no major importance.