Morphometric measurements of a Griffon Bruxellois skull.Measurements were chosen to maximize coverage of the possible variation associated with CM. All measurements start from one of those 9 points :(A) the dorsum of sphenoid-occipital synchondrosis, (B) the basion of basioccipital bone, (C) the rostral edge of the dorsal lamina of the atlas, (D) the junction between the supraoccipital bone and the occipital crest, (E) the most dorsal point of intersection of the cerebellum with the occipital lobe circle, (F) the center of occipital lobe circle, (G) the optic nerve, (H) the most caudal point of the olfactory bulb and (I) the intersection point with the HA baseline.