The Pit Bull immediately strikes one as being a dog of power, passion, and undying willingness. The brick-like head, which is especially broad between the cheeks (to house the powerful jaws), is carried upon a thickly muscled, well-defined neck. The neck runs into a deep, thick, well-sprung chest. The American Pit Bull is a very muscular, stocky, yet agile dog which is extremely strong for his size. The ears are generally cropped, though this is optional. Docked tails are not accepted by the UKC or the ADBA. The eyes are round, and any color is acceptable. The teeth should form a scissors bite.