Figure 1

MRI SM clear after the age of three and percentage of skull distributed in the fourth quadrant. Graph illustrating relationship between percentage of skull distributed in the fourth quadrant upon photo analysis and the probability of that individual being clear over the age of three years. The graph shows risk of developing SM decreasing with increasing distribution of cranium caudally versus rostrally, suggesting dogs with significantly more rostral doming being more at-risk of developing SM before 3 years of age.