1、His jaw muscles knotted with anger.
2、The jaw muscles are almost always involved (lockjaw).
3、Giant pandas have large molar teeth and strong jaw muscles for crushing tough bamboo.
4、The impressive jaw muscles of Centrosaurus allowed it to sheer through extremely tough foliage with ease.
5、A boto's jaw muscles can snap its elongated beak down on prey with crocodilian ferocity.
