Brindles of a basic color, may have the stripes of either less or with very strong intensity. A black mask may or may not be present. In all permitted colors white markings should be limited to the feet, chest, and tip of tail. The white markings are not desirable on any other part of the body. SKIN One of the most important breed characteristics is the thick, loose skin over the whole body, chiefly at the neck, forming pronounced dewlaps, and in many individuals the folds proceed to the chest and abdomen.
Some dogs show a fold at the side of the head and also at the withers descending to the shoulder.
When the dog is in repose the head is free of wrinkles. When alert, in order to lift the ears, the contraction of the skin at the skull forms little wrinkles along a longitudinal line of the skull. COAT Short, smooth, dense and tight to the skin. All champions must have a certificate of approval at the temperament test. This type of test is made at all specialty shows.