His jaws gaped so wide that I could see far down his throat.

Then, slowly, the head lifted, and the jaws gaped wide.

The jaws gaped open, and a cloud of steam shot out.

His jaw gaped as if held by a weak spring.

Then my jaw gaped so hard I could barely speak.

The jaws gaped slowly open, like the gateway to Hell.

Suddenly it reared high out of the water, and its jaws gaped open.

The cop's jaw gaped as he saw the figure that confronted him.

His jaw gaped open as the officer went by, almost close enough to touch, and stopped in front of Tembo.

The jaws gaped and teeth closed above Stanley's middle set of legs.