Compactness of form, well knit proportions, and hardness of developed muscle.
Proportions are square.
The eyes are dark in color, very large, bold and prominent, globular in shape, soft and solicitous in expression, very lustrous, and, when excited, full of fire. The ears are thin, small, soft, like black velvet. The wrinkles are large and deep. The muzzle is short, blunt, square, but not upfaced. Bite-A Pug's bite should be very slightly undershot.