rkpshows-school-of-ventriloquism.blogspot.com
Inside the professional Ventriloquist dummy head are many moving parts, theses moving parts are used for animation of the Ventriloquist dummy... this demo photo is of Moving eyes... moving mouth... To control these movements are on a headstick that have levers that the Ventriloquist use with their fingers. as you can see in the demo photo there's springs and rods used to make the movement happen.
There's many Ventriloquist dummy builders around today that have careers making Ventriloquist figures and repairing and restoring Ventriloquist figures so maybe you also can have a career in becoming a Ventriloquist figure maker also.