Figure 1. llustration of the cranial measurements (recorded in mm) used in the canonical variates analysis comparing specimens from known populations of Eurasion wild boar, feral hogs, wild boar/feral hog hybrids, and domestic swine by Mayer and Brisbin (1991). The linear measurements are as follows: A - occipitonasal length; B - zygomatic width; C - rostral length; D - palatal length; E - premaxillary rostral width; F - palatal constriction; and G - supraoccipital constriction. Refer to Appendix for detailed descriptions of these measurements.