The =masseter= is not so large as in the horse; a considerable part of
it arises on the facial tuberosity and is directed obliquely backward
and downward, so that it would draw the lower jaw forward as well as
upward.
The =temporalis= conforms to the temporal fossa, and is therefore longer
and entirely lateral in position.
The =pterygoidei= are not quite clearly separated; their direction is
more oblique, and the origin of the pterygoideus internus is nearer the
median plane than in the horse.
[Illustration: