This is a lifesize replica of the head of the Cat Beast from Shane Acker's movie "9".
The base is a real Bobcat/Lynx skull, to which I have added all of the scratch-built components. All of the added pieces were made from bits and pieces - sheet styrene, tubing, plastic hemispheres, bottle caps, washers, wires, paper towel holder top, etc.
The red eye has a 9v red LED lamp installed, and the searchlight eye contains a 12v ultrabright blue LED.