Head and Skull Head properties of great importance, must be considered in proportion to size of dog. Viewed from front or side, head resembles a well-blunted clean wedge, being smooth in outline. Skull flat. Sides taper gradually and smoothly from ears to end of black nose, without prominent cheek bones or pinched muzzle. Viewed in profile, top of skull and top of muzzle lie in two parallel straight lines of equal length divided by a slight, but perceptible stop or break. A mid-point between inside corner of eyes (which is centre of a correctly placed stop) is centre of balance in length of head. End of smooth, well rounded muzzle blunt, never square. Under jaw strong, clean cut. Depth of skull from brow to underpart of jaw never excessive (deep through). Nose always black.