A radiologic and tomographic study was made of the cranioencephalic to
pography of canary goats of medium weight and size. In a first step, t
he exocranialis references corresponding to an axis designed at the le
vel of the meatus acusticus externus and parallel to the basicranial a
xis were anatomically and radiologically defined. Conventional stereot
axic techniques were then used to reach the standard position of the h
ead in order to obtain macroscopical cross sections at different level
s perpendicular to the base of the cranium. In a second step, a tomogr
aphic study was made to confirm the design of the axis.